noun fire·arm \ˈfī(-ə)r-ˌärm\
- A arms fired
- A device which, on demand by activating some sort of switch like a trigger, ignites a very-rapidly burning propellant or an explosive, expels a projectile such as a bullet, or projectiles such as shot, from a tubular barrel (or barrels) with sufficient force as to cause acute bodily harm to the target, animal, or person which it hits.
- A rifle, shotgun or handgun using gunpowder as a propellant. By federal definition, under the 1968 Gun Control Act. Air guns are not, by definition, firearms.