What does ampulla mean?
The definition of ampulla
Am*pul”la, n.; pl. Ampullæ.
Etym: [L. ]

1 (Rom. Antiq.)
A narrow-necked vessel having two handles and bellying out like a jug.
2 (Eccl.)

(a) A cruet for the wine and water at Mass.
(b) The vase in which the holy oil for chrism, unction, or coronation is kept. Shipley.

3 (Biol.)
Any membranous bag shaped like a leathern bottle, as the dilated end of a vessel or duct; especially the dilations of the semicircular canals of the ear.