A Prisoner's Dictionary
"Language is ever-changing. This is particularly true in prisons, where there is the motion of people coming and going, a culture based on a unique set of circumstances, and the need to speak in words that often carry depths of meaning. There are forms of expression that can never be fully understood by the outside world. There are also words that vary from race to race, prison to prison -- as well as slang that find its way into prisons from the outside."

The Correctional Officers Guide to Prison Slang

Criminal Justice Today 8E Glossary
"Comprehensive criminal justice terminology."

Criminology Today Glossary

Criminal Law Glossary

Glossary of Human Rights Terms

Glossary and Acronyms from the U.S. Citizenship and Immigration Services, a bureau of the U.S. Department of Homeland Security.