[医] 安瓿[剂], 壶腹

Ampulla \Am*pul"la\, n.; pl. {Ampull[ae]}. [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.