yakuza organized crime in Japan; an alliance of criminal organizations and illegal enterprises
yardie member of an international gang of Jamaican criminals who sell drugs and violence; "A much publicized raid on a yardie stronghold had first been simulated at Riot City"
A gangster is a criminal who is a member of a gang, often part of organized crime. Several notorious gangs, including some that are centuries old, are mentioned in the article on gangs. Gangsters are also called “mobsters,” a term is derived from "mob" and the suffix "ster.".
