What does udder mean?
An udder is the external mammary organ of a cow or another milk-giving mammal. It is especially associated with cattle, goats, and sheep, although the term may be applied more broadly. An udder contains mammary tissue and the teats through which milk is released. In dairy work, a cow's udder may be divided into four quarters, each with its own teat and milk supply, and references to udder health are common in veterinary and farm records. In ordinary conversation, teat is more likely to identify a single protruding outlet, while udder names the larger organ as a whole. The term is therefore more anatomical and technical than everyday vocabulary, but it is precise and practical when discussing milking, milk production, animal welfare, or disease affecting the mammary glands.
nounThe external mammary organ of a cow or other milk-giving mammal, especially the fleshy structure containing the teats through which milk is released.
- The external mammary organ of a cow or another milk-giving mammal, especially the fleshy structure containing the teats.
"The veterinarian gently examined the cow's swollen udder."
"The veterinarian gently examined the cow's swollen udder."
"Each teat on a cow's udder channels milk into its own quarter."
The plural is regular and is used when referring to more than one animal's udder.
"The workers inspected the cows' udders before milking."
A cow's udder may have four teats, but dairy specialists call its separate milk-producing sections 'quarters'.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does udder come from?
Udder comes from Old English ūder, an inherited Germanic noun recorded in early medieval English. Its relatives include Dutch uijer, German Euter, and Old Norse udr, which preserve cognate forms from other Germanic languages. These words belong to an old family of Germanic vocabulary for the milk-bearing organ of an animal.
How udder is actually used
The word is neutral but primarily specialist, appearing in dairy farming, veterinary medicine, animal welfare, and anatomy. In general conversation, teat more often identifies one protruding outlet, whereas udder denotes the larger organ as a whole.