1. (noun) a light-tight supply chamber holding the film and supplying it for exposure as required

• magazine

2. (noun) an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable

• pickup

1. (noun) ammunition consisting of a cylindrical casing containing an explosive charge and a bullet; fired from a rifle or handgun

• ammo
• ammunition

2. (noun) a light-tight supply chamber holding the film and supplying it for exposure as required

• supply chamber

3. (noun) a module designed to be inserted into a larger piece of equipment

• module

4. (noun) an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable

• electro-acoustic transducer

1. (noun) ammunition consisting of a cylindrical casing containing an explosive charge and a bullet; fired from a rifle or handgun

• ball cartridge
• blank
• blank shell
• dummy
• cartouch
• cartouche

2. (noun) a module designed to be inserted into a larger piece of equipment

• ink cartridge
• tape cartridge

3. (noun) an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable

• crystal pickup