cartridges

Concise Oxford English Dictionary © 2008 Oxford University Press:
cartridge/ˈkɑːtrɪʤ/

▶noun

• 1 a container holding a spool of photographic film, a quantity of ink, or other item or substance, designed for insertion into a mechanism.

• 2 a casing containing a charge and a bullet or shot for small arms or an explosive charge for blasting.

– origin C16: from Fr. cartouche (fem.), from Ital. cartoccio (see cartouche).