definition of
gun

[1] #1 gun n. a weapon that discharges a missile at high velocity (especially from a metal tube or barrel). wn

[2] #2 gun n. [artillery, heavy weapon, ordnance] large but transportable armament. wn

[3] #3 gun v. shoot with a gun. wn

[4] #4 gun n. [gunman] a person who shoots a gun (as regards their ability). wn

[5] #5 gun n. [gunman, gunslinger, hired gun, gun for hire, triggerman, hit man, hitman, torpedo, shooter] a professional killer who uses a gun. wn