1. a container holding a bullet and gunpowder for use in a firearm
2. a removable case containing material for insertion into a device

Examples

• The hunter loaded a fresh cartridge into his rifle.
• She inserted a new ink cartridge into the printer.
• The video game cartridge wouldn’t work in the console.
• He bought a box of shotgun cartridges for hunting season.
• The old typewriter needed a new ribbon cartridge.
• The water filter cartridge should be replaced every six months.