- a dilated portion of a canal or duct, especially of the semicircular canals of the ear.
- 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.
- ampulla of Lorenzini.
- 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
