cartridge

Universal Words noun 1 (AmE also shell) a tube or case containing explosive and a bullet or SHOT, for shooting from a gun 2 a case containing sth that is used in a machine, for example photographic film for a camera, ink for a printer, etc. Cartridges are put into the machine and can be removed and replaced when they are finished or empty. 3 a thin tube containing ink which you put inside a pen