n.
Variant: or am · pule also am · pul
Pronunciation: ' am- ˌ pyül, -pül
Function: noun
Etymology: Middle English ampulle flask, from Old English & Anglo-French; Old English ampulle & Anglo-French ampuille, from Latin ampulla
Date: 1907
1 : a hermetically sealed small bulbous glass vessel that is used to hold a solution for hypodermic injection
2 : a vial resembling an ampoule