"gun" in the noun sense
a weapon that discharges a missile at high velocity (especially from a metal tube or barrel)
2. artillery, heavy weapon, gun, ordnance
large but transportable armament
3. gunman, gun
a person who shoots a gun (as regards their ability)
4. gunman, gunslinger, hired gun, gun, gun for hire, triggerman, hit man, hitman, torpedo, shooter
a professional killer who uses a gun
5. grease gun, gun
a hand-operated pump that resembles a pistol forces grease into parts of a machine
6. accelerator, accelerator pedal, gas pedal, gas, throttle, gun
a pedal that controls the throttle valve
"he stepped on the gas"
the discharge of a firearm as signal or as a salute in military ceremonies
"two runners started before the gun"
"a twenty gun salute"
"gun" in the verb sense
shoot with a gun
Source: WordNet® (An amazing lexical database of English)
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