In <em>general</em>. In this Part, the following terms have the meanings indicated. “Ammunition” means any cartridge, shell, or other device that contains explosive or incendiary material and is designed or intended for use in any firearm. “Child safety lock” means:a device that, when locked in place, prevents the trigger from being moved and can itself be removed only by using a key or combination; or any other device that:when locked in place, otherwise renders the firearm inoperable and can itself be removed only by using a key or combination; and has been approved for this purpose by the Police Commissioner. “Firearm” means any pistol, revolver, rifle, shotgun, short-barreled rifle, short-barreled shotgun, or other firearm, except an inoperable antique firearm. City Code, 1976/83, art. 19, §117A(a) Ord. 91-720 Ord. 98-243 Ord. 14-307 Ord. 22-125