A worldwide fascination with gangs is evident: they are a major focus of the criminal justice system and the object of much media attention. This new Oxford Reference title of over 250 entries gives a concise overview of key terms used in the study and understanding of gangs - the first dictionary of its kind to focus on gang vernacular. Broad in scope, it covers: colloquialisms used in gang culture to describe certain behaviours common among gang members, such as caught slipping and jumped in; sociological and criminological terms in relation to gangs, such as social disorganization and social learning; as well as general academic concepts which apply to gangs, including Critical Race Theory, acculturation, moral panic, and identity. It also includes entries on gangs both inside and outside of the United States and theories of key gang researchers.