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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Gangster's nickname 5 letters:

NITTI: Gangster nicknamed "The Enforcer"
BUGSY: Classic gangster nickname
BUGSY: Gangster's nickname
CAPONE: Gangster nicknamed "Scarface"
SCARFACE: Gangster nickname
MACHINEGUNKELLY: *Nickname of gangster George K. Barnes