cartridge
car.tridge \'ka:r-trij, dial or archaic 'ka-trij\ n [alter. of earlier cartage, modif. of MF cartouche] 1a: a tube of metal, paper, or both containing a complete charge for a fire arm and usu. a cap or other initiating device 1b: a case containing an explosive charge for blasting 2: an often cylindrical container of material for insertion into a large me chanism or apparatus 3: a small case in a phonograph pickup containing the needle and the mechan ism for translating stylus motion into electrical voltage
Webster's English Dictionary