cartridge (Noun) — Ammunition consisting of a cylindrical casing containing an explosive charge and a bullet; fired from a rifle or handgun.
cartridge (Noun) — A light-tight supply chamber holding the film and supplying it for exposure as required.
cartridge (Noun) — A module designed to be inserted into a larger piece of equipment. ex. "he loaded a cartridge of fresh tape into the tape deck"
cartridge (Noun) — An electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable.
cartridge (Noun) — (computing) a container of ink or toner for a computer printer.