Ampullae

Anatomy. a dilated portion of a canal or duct, especially of the semicircular canals of the ear.
Zoology, Botany. any flask-shaped structure.
Ecclesiastical.

a vessel for the wine and water used at the altar.
a vessel for holding consecrated oil.

a two-handled bottle having a somewhat globular shape, made of glass or earthenware, used by the ancient Romans for holding oil, wine, or perfumes.
Ichthyology, .
Historical Examples

These vessels connect with the urethra by a small duct, at the point where the ampullae do.
Self Knowledge and Guide to Sex Instruction T. W. Shannon

E—Other ampullae receiving the distilled aqua and likewise arranged in sand contained in the lower boxes.
De Re Metallica Georgius Agricola

Thus impulses may be generated in the nerves of the ampullae.
Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 Various

noun (pl) -pullae (-ˈpʊliː)
(anatomy) the dilated end part of certain ducts or canals, such as the end of a uterine tube
(Christianity)

a vessel for containing the wine and water used at the Eucharist
a small flask for containing consecrated oil

a Roman two-handled bottle for oil, wine, or perfume
n.

late 14c., type of globular ancient Roman vessel; see ampoule.

ampulla am·pul·la (ām-pul’ə, -pŭl’ə)
n. pl. am·pul·lae (-pul’ē, -pŭl’ē)
A dilated portion of a canal or duct, as in the semicircular canal of the ear.
am·pul’lar adj.