Pronunciation: (am-pul'u, -pool'u),[key] —n., —pl.-pul•laePronunciation: (-pul'ē, -pool'ē).[key] 1. Anat.a dilated portion of a canal or duct, esp. of the semicircular canals of the ear.
2. Zool.,Bot.any flask-shaped structure.
3. Eccles. a. a vessel for the wine and water used at the altar.
b. a vessel for holding consecrated oil.
4. 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.
5. Ichthyol.See ampulla of Lorenzini.