(n): projectiles to be fired from a gun
(n): a light-tight supply chamber holding the film and supplying it for exposure as required
(n): a mechanical device for holding something and supplying it as needed
(n): a module designed to be inserted into a larger piece of equipment
(n): a self-contained component (unit or item) that is used in combination with other components
(n): an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable
(n): a transducer that converts electrical to acoustic energy or vice versa
The case in which the exact charge of powder for fire-arms is made up; of paper, parchment, pasteboard, flannel, serge, metal, etc., according to its use. Generally, for small-arms, the cartridge contains the bullet as well as the powder (called distinctively a ball-cartridge); if it contains no ball, it is a blank cartridge. (OED)