n.
Pronunciation: ' ə -d ə r
Function: noun
Etymology: Middle English, from Old English ū der; akin to Old High German ū tar udder, Latin uber, Greek outhar, Sanskrit ū dhar
Date: before 12th century
1 : a large pendulous organ consisting of two or more mammary glands enclosed in a common envelope and each provided with a single nipple ― see COW illustration
2 : MAMMARY GLAND