(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.
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.
... St. John appeared to a person suffering from gout, and bade him take a little oil in a small ampulla from the lamp that burnt before the image of the Saviour, in the great tetrapyle at Alexandria, and anoint ... — Three Thousand Years of Mental Healing • George Barton Cutten