gun

gun (http://definr.com/gun)

     n 1: a weapon that discharges a missile at high velocity
          (especially from a metal tube or barrel)
     2: large but transportable armament [syn: artillery, {heavy
        weapon}, ordnance]
     3: a person who shoots a gun (as regards their ability) [syn: gunman]
     4: a professional killer who uses a gun [syn: gunman, gunslinger,
         hired gun, triggerman, hit man, torpedo, shooter]
     5: a hand-operated pump that resembles a gun; forces grease
        into parts of a machine [syn: grease-gun]
     6: a pedal that controls the throttle valve; "he stepped on the
        gas" [syn: accelerator, accelerator pedal, gas pedal,
         gas, throttle]
     7: the discharge of a gun as signal or as a salute in military
        ceremonies; "a twenty gun salute"
     v : shoot with a gun