What is the meaning of gun?

noun

• A weapon that discharges a missile at high velocity (especially from a metal tube or barrel. )
• Large but transportable armament.
  • synonyms: artillery, heavy weapon, ordnance
• A person who shoots a gun (as regards their ability.
  • synonyms: gunman
• A professional killer who uses a gun.
  • synonyms: gunman, gunslinger, hired gun, gun for hire, triggerman, hit man, hitman, torpedo, shooter
• A hand-operated pump that resembles a revolver; forces grease into parts of a machine.
  • synonyms: grease-gun
• A pedal that controls the throttle valve.
  • usage: "he stepped on the gas"
  • synonyms: accelerator, accelerator pedal, gas pedal, gas, throttle
• The discharge of a firearm as signal or as a salute in military ceremonies.
  • usage: "two runners started before the gun"; "a twenty gun salute"

verb

• Shoot with a gun. .