noun:a person (especially a man) who uses a gun to shoot someone or to try to shoot someone
noun:a man armed with a gun
synonyms: cain, nimrod, adventurer
Examples
They were shot by an unknown 'gunman'.
Movie clips
Movie quotes
(..) Gus was trying to kill both of us, and now he pulls you out of the lab and employs you as... what, an assistant gunman? A tough guy? Does that make any sense to you? He says he sees something in you. (..)