ampulla

‖ n.; pl. Ampullæ [ L. ] 1. (Rom. Antiq.) A narrow-necked vessel having two handles and bellying out like a jug. [ 1913 Webster ]

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. [ 1913 Webster ]

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. [ 1913 Webster ]