n. A very portable, short firearm, for hand use, which fires bullets or projectiles, such as a handgun, revolver, pistol, or Derringer.n. A less portable, long firearm, bullet or projectile firing; a rifle, either manual, automatic or semi-automatic; a musket or shotgun.n. 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, zipgun; a home-made firearm such as a potato gun.n. 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.n. 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.n. 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).n. A pattern that "fires" out other patterns.n. A man who carries or uses a rifle, shotgun or handgun.n. The biceps.v. To shoot someone or something, usually with a firearm.v. To speed something up.v. To offer vigorous support to a person or cause.v. To seek to attack someone; to take aim at someone.v. To practice fowling or hunting small game; chiefly in participial form: to go gunning.v. A verb used to express future action.