\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.