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 ]

a. [ L. ampullaceus, fr. ampulla. ] Like a bottle or inflated bladder; bottle-shaped; swelling. Kirby. [ 1913 Webster ]

Ampullaceous sac (Zool.), one of the peculiar cavities in the tissues of sponges, containing the zooidal cells. [ 1913 Webster ]

{ } a. Resembling an ampulla. [ 1913 Webster ]