The term 'CARTRIDGE' can refer to a variety of items, including ammunition and shotgun shells. The crossword solutions for this term are 'AMMO' (4 letters) and 'bshot' (5 letters). AMMO is a general term for bullets or other projectiles used in firearms, while bshot is a specific type of shotgun shell that contains small metal pellets. Both AMMO and bshot are typically stored in cartridges, which are cylindrical containers that hold the ammunition and protect it from the elements.