0 a case containing the explosive charge (and usually a bullet) for a gun -- die Patrone
a spent cartridge (= one that has been used).
1 a small plastic container of ink for a printer -- die Patrone
2 a stylus of a record-player and its holder. -- der Tonkopfabnehmer
3 a plastic container of photographic film or recording tape. -- die Kassette
4 a tube containing ink for loading a fountain pen. -- die Patrone