gang, mob, pack, ring - an association of criminals; "police tried to break up the gang"; "a pack of thieves"

apache - a Parisian gangster

criminal, crook, felon, malefactor, outlaw - someone who has committed (or been legally convicted of) a crime

yakuza - a Japanese gangster

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"

Al Capone, Alphonse Capone, Capone, Scarface - United States gangster who terrorized Chicago during Prohibition until arrested for tax evasion (1899-1947)