from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A baglike organ containing the mammary glands, characteristic of certain female mammals, such as cows, sheep, and goats.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Part of domestic milk-giving animal that expresses milk, especially cow. Also goat, sheep, yak. See mammary gland.

from the GNU version of the Collaborative International Dictionary of English

  • n. The glandular organ in which milk is secreted and stored; -- popularly called the bag in cows and other quadrupeds. See mamma.
  • n. One of the breasts of a woman.

from The Century Dictionary and Cyclopedia

  • n. The mammary glands of cattle and various other animals, especially when large and baggy and with more than one teat, as two or four; the milk-bag. Single glands with one nipple apiece are more frequently called teat or dug.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. mammary gland of bovids (cows and sheep and goats)


Middle English, from Old English ūder; see euə-dh-r̥ in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)



Log in or sign up to get involved in the conversation. It's quick and easy.