Definition of gun

Definition of gun
  1. gun Noun A cannon with relatively long barrel, operating with relatively low angle of fire, and having a high muzzle velocity. JP 1-02.
  2. gun Noun A cannon with a 6-inch/155mm minimum nominal bore diameter and tube length 30 calibers or more. See also: howitzer; mortar. JP 1-02.
  3. gun Noun A very portable, short arm, for hand use; a bullet or projectile-firing ; handgun, revolver, pistol, Derringer, zipgun, so forth.
  4. gun Noun A less portable, long arm; bullet or projectile firing; rifle, either manual, automatic or semi-automatic; a musket or shotgun.
  5. gun Noun Any implement designed to fire a projectile from a tube, even if it is not a firearm, e.g., air-pressure pellet gun, air rifle, BB gun; or, a home-made firearm such as a potato gun.
  6. gun Noun Any device or tool that projects a substance in a superficially similar fashion to a firearm, e.g., nail gun, squirt gun, spray gun, grease gun.
  7. gun Noun A device or tool shaped like a pistol and operated in similar fashion by pulling a trigger with the index finger, e.g., rivet gun, screw gun, price-label gun.
  8. gun Noun A long surfboard designed for surfing big waves (not the same as a longboard, a gun has a pointed nose and is generally a little narrower).
  9. gun Noun A pattern that "fires" out other patterns.
  10. gun Noun Biceps.
  11. gun Verb To shoot someone or something, usually with a firearm.
  12. gun Verb To speed something up.
  13. gun Verb To offer vigorous support to a person or cause.
  14. gun Verb To seek to attack someone; to take aim at someone.
  15. gun Adjective To be very good or the best at something.[]
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