||Am*pul"la, n.; pl. Ampullæ (&?;). [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.