Cartridge

Cartridge can mean:
Cartridge (electronics), an object that is used in a larger piece of equipment
4-track cartridge, a music storage format popular from the late 1950s to the early 1970s
8-track cartridge, a music storage format popular from the late 1960s to the early 1980s
Cartridge (firearms), a round of charge-and-bullet ammunition
Magnetic cartridge, the removable part of a record player arm holding the needle
Ink cartridge, a replaceable part of an inkjet printer that contains the ink