firearm n 1: a portable gun; "he wore his firearm in a shoulder holster" [syn: {firearm}, {piece}, {small-arm}]
Firearm \Fire"arm`\ (f[imac]r"[aum]rm`), n. A gun, pistol, or any weapon from which a shot is discharged by the force of an explosive substance, as gunpowder. [1913 Webster]
21 Moby Thesaurus words for "firearm": automatic, blowgun, blowpipe, flamethrower, gat, gun, handgun, heater, musket, peashooter, piece, pistol, repeater, revolver, rifle, rod, sawed-off shotgun, shooting iron, shotgun, six-gun, six-shooter