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Federal prison has its own working vocabulary. Some of it is official language from the Bureau of Prisons. Some of it is slang that people inside use every day. This glossary collects the terms families, defendants, attorneys, and reporters run into most often. It explains what each one means in plain language. The goal is to help someone read a letter, follow a phone call, or understand a court filing without guessing.<ref>{{cite web |title=Prison Slang Glossary |url=https://www.prisonfellowship.org/resources/prison-slang-glossary/ |publisher=Prison Fellowship |date=2025 |access-date=June 3, 2026}}</ref>
'''Popular Prison Terminology''' refers to the informal slang, acronyms, and phrases commonly used by incarcerated individuals, staff, and advocates within the federal and state correctional systems. This evolving lexicon reflects institutional culture, power dynamics, security procedures, and daily life behind bars. While regional and facility-specific variations exist, many terms have become widespread across the United States, especially in the '''Federal Bureau of Prisons''' (BOP) system. Understanding this terminology aids communication between inmates, families, attorneys, and reentry professionals.<ref>{{cite web |title=Prison Slang Glossary |url=https://www.prisonfellowship.org/resources/prison-slang-glossary/ |publisher=Prison Fellowship |date=2025 |access-date=November 24, 2025}}</ref>


As of 2025, digital platforms and former inmates have popularized terms through podcasts, books, and social media, though BOP policy prohibits recording or publishing internal slang without approval.<ref>{{cite web |title=Prison Lingo: A Glossary of Common Terms |url=https://www.themarshallproject.org/2024/06/12/prison-lingo-glossary-terms |publisher=The Marshall Project |date=June 12, 2024 |access-date=November 24, 2025}}</ref> Knowledge of these terms helps families interpret correspondence and supports effective advocacy during incarceration and reentry.
Many of these words carry official weight. "Good time" and "designation" appear in statute and BOP policy. Others are informal. "The hole" and "fish" are slang for things that have formal names. Where a term has both, the formal name is given alongside it.<ref>{{cite web |title=Prison Lingo: A Glossary of Common Terms |url=https://www.themarshallproject.org/2024/06/12/prison-lingo-glossary-terms |publisher=The Marshall Project |date=June 12, 2024 |access-date=June 3, 2026}}</ref>


==Common Categories and Terms==
==Overview==


Prison slang spans food, housing, discipline, programs, and interpersonal dynamics. Below are widely recognized terms in federal facilities as of 2025.
The Bureau of Prisons runs the federal system. Most of the acronyms in this glossary trace back to BOP policy or to federal law. The agency operates facilities at several security levels, from minimum-security camps to high-security penitentiaries. The same words travel across all of them, though some terms are more common at one level than another.<ref>{{cite web |title=About Our Facilities |url=https://www.bop.gov/about/facilities/federal_prisons.jsp |publisher=Federal Bureau of Prisons |date=2025 |access-date=June 3, 2026}}</ref>


===Housing and Units===
Terminology changes over time. The First Step Act of 2018 added a layer of new language about earned credits and reentry. Words like "time credits" and "PATTERN" entered common use after that law passed. Older slang stayed in place alongside it.<ref>{{cite web |title=First Step Act |url=https://www.bop.gov/inmates/fsa/ |publisher=Federal Bureau of Prisons |date=2025 |access-date=June 3, 2026}}</ref>
* '''Camp''' or '''Federal Prison Camp (FPC)''': Minimum-security “Club Fed” facilities with dorm housing and no fence.
* '''SHU''' (Special Housing Unit) or '''the Hole''': Segregated/segregation housing for disciplinary or protective custody.
* '''Pod''' or '''Tier''': Housing unit or floor within a facility.
* '''Cube''' vs. '''Cell''': Open-bay dormitory cubicle (camp/low) versus locked two-person cell (medium/high).
* '''Fish''': New arrival; “catching out” means completing sentence.


===People and Roles===
The sections below group terms by where they come up. Housing and discipline covers cells, units, and the rules that govern them. Daily life covers food, money, and routine. Legal and process terms covers the words that show up in court records and at intake.
* '''CO''' (Correctional Officer) or '''Hack''': Prison guard.
* '''Warden''' or '''The Man''': Facility head.
* '''Shot Caller''': Influential inmate who maintains order within racial/group lines.
* '''PC''' (Protective Custody) or '''Check-In''': Inmate requesting segregation for safety; often viewed negatively.
* '''Snitch''' or '''Rat''': Informant; “paperwork” (PSR/discovery) used to verify status.


===Food and Commissary===
==Housing and Discipline==
* '''Spread''' or '''Boat''': Homemade meal combining commissary items (e.g., summer sausage, rice, chips).
* '''Store''' or '''Commissary Day''': Weekly shopping from canteen.
* '''Swipe''': Trade or loan commissary items (often with interest).
* '''Hooch''' or '''Pruno''': Homemade alcohol from fruit, sugar, and bread.


===Discipline and Security===
These terms describe where a person is held and what happens when rules are broken.
* '''Shot''' or '''Ticket''': Incident report leading to disciplinary hearing.
* '''Diesel Therapy''': Frequent transfers to disrupt inmate relationships or as punishment.
* '''Kite''': Written request or note to staff (e.g., medical, cop-out).
* '''Lockdown''': Facility-wide restriction to cells (planned or emergency).
* '''Count''': Official headcount (5–7 times daily); “standing count” requires visibility.


===Programs and Release===
; SHU (Special Housing Unit)
* '''RDAP''' (Residential Drug Abuse Program): Nine-month substance treatment earning up to 12 months off sentence.
: A segregated unit separate from the general population. People are placed there for discipline or for their own protection. Inmates and staff often call it "the hole." Time in the SHU usually means more lockdown hours and fewer privileges.<ref>{{cite web |title=Special Housing Units |url=https://www.bop.gov/policy/progstat/5270_010.pdf |publisher=Federal Bureau of Prisons |date=2016 |access-date=June 3, 2026}}</ref>
* '''FSA Credits''' or '''Time Credits''': First Step Act earned credits for programming (10–15 days per 30 days).
* '''Halfway House''' or '''RRC''' (Residential Reentry Center): Prerelease community placement.
* '''Gate Money''': Small cash disbursement upon release (typically $40–$100).
* '''Good Time''': Statutory sentence reduction for good conduct (54 days/year).


===Miscellaneous===
; The hole
* '''Car''': Clique or racial/group affiliation (e.g., “White car,” “PA car” for Pennsylvanians).
: Common slang for the Special Housing Unit. The name predates the BOP and is used across most U.S. prisons and jails.
* '''Keister''' or '''Hoop''': Hide contraband in body cavity.
* '''Ninja Turtles''': Officers in riot gear.
* '''Road Dog''': Close friend doing time together.
* '''Jack Mack''': Canned mackerel (high-value commissary protein).


==How Terms Are Used==
; Shot
: Slang for an incident report. A "shot" is written by staff when an inmate is accused of breaking a rule. It can lead to a disciplinary hearing and loss of good time. The formal term is "incident report."<ref>{{cite web |title=Inmate Discipline Program |url=https://www.bop.gov/policy/progstat/5270_009.pdf |publisher=Federal Bureau of Prisons |date=2011 |access-date=June 3, 2026}}</ref>


Inmates use slang in letters, phone calls, and TRULINCS emails, often to evade monitoring or maintain cultural identity. Staff adopt some terms informally but avoid endorsing others in official reports. Families learn terminology through experience or online communities (e.g., PrisonTalk, Reddit r/ExCons).<ref>{{cite web |title=Prison Slang: Words and Expressions Defined |url=https://www.prisonwriters.com/prison-slang/ |publisher=Prison Writers |date=2025 |access-date=November 24, 2025}}</ref>
; Lockdown
: A facility-wide restriction that keeps people confined to their cells or units. Lockdowns can be planned, such as during a search, or triggered by an emergency.


==Regional and Demographic Variations==
; Count
: The official headcount. Staff count the population several times a day. A "standing count" requires inmates to be on their feet and visible. Movement around the facility stops until the count clears.


Federal camps favor milder terms (“cube,” “store man”), while higher-security facilities use harsher slang (“hole,” “diesel”). Women's facilities often emphasize different food spreads and relationship terms. Spanish-influenced slang (“jale” for job, “casa” for cell) predominates in Southwest institutions.
; PC (Protective Custody)
: Housing for an inmate who asks to be separated from the general population for safety reasons. The request is sometimes called "checking in."


==Impact and Evolution==
; Diesel therapy
: Slang for repeated transfers between facilities. Long bus or van rides can keep a person in transit for days or weeks. The term carries the sense that the transfers themselves are a hardship.<ref>{{cite web |title=Inmate Transportation |url=https://www.usmarshals.gov/who-we-are/prisoner-operations/justice-prisoner-and-alien-transportation-system |publisher=U.S. Marshals Service |date=2025 |access-date=June 3, 2026}}</ref>


Slang fosters solidarity but can reinforce racial divisions or intimidate newcomers. BOP occasionally bans specific words in correspondence (e.g., gang terminology). Post-2018 First Step Act, terms like “FSA credits,” “PATTERN score,” and “EBRR” became universal.<ref>{{cite web |title=How the First Step Act Changed Prison Language |url=https://www.theappeal.org/first-step-act-prison-language/ |publisher=The Appeal |date=January 15, 2025 |access-date=November 24, 2025}}</ref>
==Daily Life==


TikTok, YouTube, and podcasts by former inmates have mainstreamed terms like “catching out” and “spread,” shifting perception from purely criminal to cultural.
These terms describe food, money, communication, and the people you live among.


==Criticisms and Challenges==
; Commissary
: The prison store. Inmates buy food, hygiene items, and supplies from it using money in their accounts. "Store day" or "commissary day" is the scheduled time to shop. Spending limits apply.<ref>{{cite web |title=Trust Fund / Commissary |url=https://www.bop.gov/inmates/communications.jsp |publisher=Federal Bureau of Prisons |date=2025 |access-date=June 3, 2026}}</ref>


Advocates argue slang dehumanizes (“inmate” vs. “person”) and perpetuates stigma post-release. BOP's 2024–2025 push for “person-first” language in staff training contrasts with inmate culture retaining traditional terms. Over-monitoring of slang in emails has led to rejected messages and First Amendment litigation.
; Bunkie
: A cellmate or, in dormitory housing, the person in the adjacent bunk. The word is common across federal facilities.


==Background==
; Kite
: A written note or request passed to staff. A "kite" might ask for medical attention, a meeting with a counselor, or an answer to a question. The formal version is the inmate request form, sometimes called a "cop-out."


Prison slang dates to 19th-century American jails, blending British convict argot with immigrant influences. Federal system standardized some terms after 1930 BOP creation, with major updates following 1960s–1970s drug era, 1990s gang influx, and 2018 First Step Act.
; Fish
: Slang for a new arrival. A "fish" is someone fresh to the facility who does not yet know the routines.


===Recent Developments===
; Spread
: A shared meal made from commissary items. People combine things like rice, chips, and summer sausage into a larger dish. Spreads are a common social ritual.


2025 saw new terms emerge: “credit farming” (maximizing FSA programming), “tablet hustles” (renting media), and “Zoom visits” for video calls. BOP's tablet expansion introduced “streaming” for paid music/video.
; Road dog
: A close friend serving time at the same facility. The term describes a steady companion through a sentence.


==See also==
==Legal and Process Terms==
* [[Index_of_Federal_Prison_Facilities|Federal Bureau of Prisons]]
* [[First_Step_Act:_Overview_and_Implementation|First Step Act]]
* [[Telecommunication_Systems:_Phones,_Email,_and_Tablets|TRULINCS]]
* [[Commissary Operations and Inmate Accounts]]


==External links==
These terms appear in court records, at intake, and in conversations about a sentence.
* [https://www.prisonfellowship.org/resources/prison-slang-glossary/ Prison Fellowship Slang Glossary]
 
* [https://www.themarshallproject.org/2024/06/12/prison-lingo-glossary-terms The Marshall Project Prison Lingo Guide]
; BOP (Bureau of Prisons)
: The federal agency that operates the prison system. It sits within the U.S. Department of Justice. The BOP designates facilities, sets policy, and manages custody.<ref>{{cite web |title=About the Bureau of Prisons |url=https://www.bop.gov/about/agency/ |publisher=Federal Bureau of Prisons |date=2025 |access-date=June 3, 2026}}</ref>
 
; Designation
: The process of assigning a person to a specific facility after sentencing. The BOP weighs security level, medical needs, programming, and distance from home. The result is the prison where the sentence is served.<ref>{{cite web |title=Inmate Security Designation and Custody Classification |url=https://www.bop.gov/policy/progstat/5100_008.pdf |publisher=Federal Bureau of Prisons |date=2019 |access-date=June 3, 2026}}</ref>
 
; PSR (Presentence Report)
: A document prepared by a U.S. probation officer before sentencing. It summarizes the offense, the defendant's history, and the guideline calculations. The judge relies on it heavily. The BOP also uses it for designation. It is sometimes called the PSI.<ref>{{cite web |title=Presentence Investigation Reports |url=https://www.uscourts.gov/services-forms/probation-and-pretrial-services |publisher=Administrative Office of the U.S. Courts |date=2025 |access-date=June 3, 2026}}</ref>
 
; Good time
: A reduction in sentence for good conduct. Under federal law, an eligible person can earn up to 54 days per year. The credit is defined in 18 U.S.C. § 3624.<ref>{{cite web |title=18 U.S.C. § 3624 — Release of a prisoner |url=https://www.law.cornell.edu/uscode/text/18/3624 |publisher=Legal Information Institute, Cornell Law School |date=2025 |access-date=June 3, 2026}}</ref>
 
; Time credits
: Earned time under the First Step Act. People who complete approved programs and activities can earn credits toward earlier transfer to supervised release or prerelease custody. These are separate from good time.<ref>{{cite web |title=First Step Act Time Credits |url=https://www.bop.gov/inmates/fsa/time_credits.jsp |publisher=Federal Bureau of Prisons |date=2025 |access-date=June 3, 2026}}</ref>
 
; Halfway house (RRC)
: A Residential Reentry Center. It is a community facility where people serve the final part of a sentence while working or job-hunting. It is a step between prison and full release.<ref>{{cite web |title=Residential Reentry Centers |url=https://www.bop.gov/about/facilities/residential_reentry_management_centers.jsp |publisher=Federal Bureau of Prisons |date=2025 |access-date=June 3, 2026}}</ref>
 
; RDAP (Residential Drug Abuse Program)
: A voluntary substance abuse treatment program run inside BOP facilities. It lasts roughly nine months. People who complete it and meet eligibility rules can receive up to 12 months off their sentence.<ref>{{cite web |title=Substance Abuse Treatment |url=https://www.bop.gov/inmates/custody_and_care/substance_abuse_treatment.jsp |publisher=Federal Bureau of Prisons |date=2025 |access-date=June 3, 2026}}</ref>
 
==Frequently Asked Questions==
 
{{FAQSection/Start}}
{{FAQ|question=What does "the hole" mean in federal prison?|answer="The hole" is slang for the Special Housing Unit, or SHU. It is a segregated area separate from the general population. People are placed there for discipline or for their own protection. Time in the SHU usually means more lockdown hours and fewer privileges.}}
{{FAQ|question=What is a "shot" in prison?|answer=A "shot" is slang for an incident report. Staff write one when an inmate is accused of breaking a rule. A shot can lead to a disciplinary hearing and can cost a person good-time credit. The formal term is "incident report."}}
{{FAQ|question=What is good time?|answer=Good time is a reduction in a federal sentence for good conduct. An eligible person can earn up to 54 days per year. The credit is defined in 18 U.S.C. § 3624. It is separate from First Step Act time credits.}}
{{FAQ|question=What is a halfway house?|answer=A halfway house, formally a Residential Reentry Center, is a community facility where a person serves the last part of a sentence while working or looking for work. It is a transition step between prison and full release.}}
{{FAQ|question=What does "designation" mean?|answer=Designation is the Bureau of Prisons process of assigning a person to a specific facility after sentencing. The BOP considers security level, medical needs, programming, and distance from home. The result is the prison where the sentence is served.}}
{{FAQ|question=What is the PSR?|answer=The PSR, or Presentence Report, is prepared by a U.S. probation officer before sentencing. It summarizes the offense, the defendant's background, and the sentencing guideline calculations. The judge relies on it, and the BOP uses it for designation. It is sometimes called the PSI.}}
{{FAQ|question=What is RDAP?|answer=RDAP is the Residential Drug Abuse Program, a voluntary treatment program run inside BOP facilities. It runs about nine months. People who complete it and qualify can receive up to 12 months off their sentence.}}
{{FAQSection/End}}


==References==
==References==
<references />
<references />
{{DEFAULTSORT:Terminology, Popular Prison}}
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Latest revision as of 13:49, 3 June 2026

Federal prison has its own working vocabulary. Some of it is official language from the Bureau of Prisons. Some of it is slang that people inside use every day. This glossary collects the terms families, defendants, attorneys, and reporters run into most often. It explains what each one means in plain language. The goal is to help someone read a letter, follow a phone call, or understand a court filing without guessing.[1]

Many of these words carry official weight. "Good time" and "designation" appear in statute and BOP policy. Others are informal. "The hole" and "fish" are slang for things that have formal names. Where a term has both, the formal name is given alongside it.[2]

Overview

The Bureau of Prisons runs the federal system. Most of the acronyms in this glossary trace back to BOP policy or to federal law. The agency operates facilities at several security levels, from minimum-security camps to high-security penitentiaries. The same words travel across all of them, though some terms are more common at one level than another.[3]

Terminology changes over time. The First Step Act of 2018 added a layer of new language about earned credits and reentry. Words like "time credits" and "PATTERN" entered common use after that law passed. Older slang stayed in place alongside it.[4]

The sections below group terms by where they come up. Housing and discipline covers cells, units, and the rules that govern them. Daily life covers food, money, and routine. Legal and process terms covers the words that show up in court records and at intake.

Housing and Discipline

These terms describe where a person is held and what happens when rules are broken.

SHU (Special Housing Unit)
A segregated unit separate from the general population. People are placed there for discipline or for their own protection. Inmates and staff often call it "the hole." Time in the SHU usually means more lockdown hours and fewer privileges.[5]
The hole
Common slang for the Special Housing Unit. The name predates the BOP and is used across most U.S. prisons and jails.
Shot
Slang for an incident report. A "shot" is written by staff when an inmate is accused of breaking a rule. It can lead to a disciplinary hearing and loss of good time. The formal term is "incident report."[6]
Lockdown
A facility-wide restriction that keeps people confined to their cells or units. Lockdowns can be planned, such as during a search, or triggered by an emergency.
Count
The official headcount. Staff count the population several times a day. A "standing count" requires inmates to be on their feet and visible. Movement around the facility stops until the count clears.
PC (Protective Custody)
Housing for an inmate who asks to be separated from the general population for safety reasons. The request is sometimes called "checking in."
Diesel therapy
Slang for repeated transfers between facilities. Long bus or van rides can keep a person in transit for days or weeks. The term carries the sense that the transfers themselves are a hardship.[7]

Daily Life

These terms describe food, money, communication, and the people you live among.

Commissary
The prison store. Inmates buy food, hygiene items, and supplies from it using money in their accounts. "Store day" or "commissary day" is the scheduled time to shop. Spending limits apply.[8]
Bunkie
A cellmate or, in dormitory housing, the person in the adjacent bunk. The word is common across federal facilities.
Kite
A written note or request passed to staff. A "kite" might ask for medical attention, a meeting with a counselor, or an answer to a question. The formal version is the inmate request form, sometimes called a "cop-out."
Fish
Slang for a new arrival. A "fish" is someone fresh to the facility who does not yet know the routines.
Spread
A shared meal made from commissary items. People combine things like rice, chips, and summer sausage into a larger dish. Spreads are a common social ritual.
Road dog
A close friend serving time at the same facility. The term describes a steady companion through a sentence.

These terms appear in court records, at intake, and in conversations about a sentence.

BOP (Bureau of Prisons)
The federal agency that operates the prison system. It sits within the U.S. Department of Justice. The BOP designates facilities, sets policy, and manages custody.[9]
Designation
The process of assigning a person to a specific facility after sentencing. The BOP weighs security level, medical needs, programming, and distance from home. The result is the prison where the sentence is served.[10]
PSR (Presentence Report)
A document prepared by a U.S. probation officer before sentencing. It summarizes the offense, the defendant's history, and the guideline calculations. The judge relies on it heavily. The BOP also uses it for designation. It is sometimes called the PSI.[11]
Good time
A reduction in sentence for good conduct. Under federal law, an eligible person can earn up to 54 days per year. The credit is defined in 18 U.S.C. § 3624.[12]
Time credits
Earned time under the First Step Act. People who complete approved programs and activities can earn credits toward earlier transfer to supervised release or prerelease custody. These are separate from good time.[13]
Halfway house (RRC)
A Residential Reentry Center. It is a community facility where people serve the final part of a sentence while working or job-hunting. It is a step between prison and full release.[14]
RDAP (Residential Drug Abuse Program)
A voluntary substance abuse treatment program run inside BOP facilities. It lasts roughly nine months. People who complete it and meet eligibility rules can receive up to 12 months off their sentence.[15]

Frequently Asked Questions

Q: What does "the hole" mean in federal prison?

"The hole" is slang for the Special Housing Unit, or SHU. It is a segregated area separate from the general population. People are placed there for discipline or for their own protection. Time in the SHU usually means more lockdown hours and fewer privileges.


Q: What is a "shot" in prison?

A "shot" is slang for an incident report. Staff write one when an inmate is accused of breaking a rule. A shot can lead to a disciplinary hearing and can cost a person good-time credit. The formal term is "incident report."


Q: What is good time?

Good time is a reduction in a federal sentence for good conduct. An eligible person can earn up to 54 days per year. The credit is defined in 18 U.S.C. § 3624. It is separate from First Step Act time credits.


Q: What is a halfway house?

A halfway house, formally a Residential Reentry Center, is a community facility where a person serves the last part of a sentence while working or looking for work. It is a transition step between prison and full release.


Q: What does "designation" mean?

Designation is the Bureau of Prisons process of assigning a person to a specific facility after sentencing. The BOP considers security level, medical needs, programming, and distance from home. The result is the prison where the sentence is served.


Q: What is the PSR?

The PSR, or Presentence Report, is prepared by a U.S. probation officer before sentencing. It summarizes the offense, the defendant's background, and the sentencing guideline calculations. The judge relies on it, and the BOP uses it for designation. It is sometimes called the PSI.


Q: What is RDAP?

RDAP is the Residential Drug Abuse Program, a voluntary treatment program run inside BOP facilities. It runs about nine months. People who complete it and qualify can receive up to 12 months off their sentence.


References

  1. ↑ "Prison Slang Glossary". Prison Fellowship. Retrieved June 3, 2026.
  2. ↑ "Prison Lingo: A Glossary of Common Terms". The Marshall Project. Retrieved June 3, 2026.
  3. ↑ "About Our Facilities". Federal Bureau of Prisons. Retrieved June 3, 2026.
  4. ↑ "First Step Act". Federal Bureau of Prisons. Retrieved June 3, 2026.
  5. ↑ "Special Housing Units". Federal Bureau of Prisons. Retrieved June 3, 2026.
  6. ↑ "Inmate Discipline Program". Federal Bureau of Prisons. Retrieved June 3, 2026.
  7. ↑ "Inmate Transportation". U.S. Marshals Service. Retrieved June 3, 2026.
  8. ↑ "Trust Fund / Commissary". Federal Bureau of Prisons. Retrieved June 3, 2026.
  9. ↑ "About the Bureau of Prisons". Federal Bureau of Prisons. Retrieved June 3, 2026.
  10. ↑ "Inmate Security Designation and Custody Classification". Federal Bureau of Prisons. Retrieved June 3, 2026.
  11. ↑ "Presentence Investigation Reports". Administrative Office of the U.S. Courts. Retrieved June 3, 2026.
  12. ↑ "18 U.S.C. § 3624 — Release of a prisoner". Legal Information Institute, Cornell Law School. Retrieved June 3, 2026.
  13. ↑ "First Step Act Time Credits". Federal Bureau of Prisons. Retrieved June 3, 2026.
  14. ↑ "Residential Reentry Centers". Federal Bureau of Prisons. Retrieved June 3, 2026.
  15. ↑ "Substance Abuse Treatment". Federal Bureau of Prisons. Retrieved June 3, 2026.


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