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

  • n. A nipple or teat.
  • n. A nipple-shaped protuberance.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The nipple.

from the GNU version of the Collaborative International Dictionary of English

  • n. The nipple.

from The Century Dictionary and Cyclopedia

  • n. The nipple of the mammary gland.
  • n. Some nipple-like or mammillary structure.
  • n. In entomology, a small conical process or appendage on a surface; a mammula.
  • n. [capitalized] In conchology, a genus of gastropods.
  • n. In botany, applied specifically
  • n. to tubercles on a plant-surface, as in Mamillaria
  • n. to the apex of the nucleus of an ovule
  • n. to granular prominences on some pollen-grains.

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

  • n. the small projection of a mammary gland


Latin mamilla, mammilla, diminutive of mamma, breast; see mā-2 in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin, diminutive of mamma ("breast"). (Wiktionary)



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