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

  • n. Any of several hoofed mammals of the genus Equus, resembling and closely related to the horses but having a smaller build and longer ears, and including the domesticated donkey.
  • n. A vain, self-important, silly, or aggressively stupid person.
  • n. The buttocks.
  • n. The anus.
  • n. Vulgar Slang Sexual intercourse.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of several species of horse-like animals, especially Equus africanus, often domesticated and used a beast of burden.
  • n. A stupid person.
  • n. Buttocks.
  • n. Sex.
  • n. Anus.
  • n. Used in similes to express something bad or unpleasant.
  • n. Used after an adjective to indicate extremes or excessiveness.
  • n. One's self or person, chiefly their body.

from the GNU version of the Collaborative International Dictionary of English

  • n. A quadruped of the genus Equus (Equus asinus), smaller than the horse, and having a peculiarly harsh bray and long ears. The tame or domestic ass is patient, slow, and sure-footed, and has become the type of obstinacy and stupidity. There are several species of wild asses which are swift-footed.
  • n. A dull, heavy, stupid fellow; a dolt.

from The Century Dictionary and Cyclopedia

  • n. A solidungulate quadruped of the family Equidœ, the Equus asinus.
  • n. Any wild species of the subgenus Asinus, as the dziggetai or hemione, onager, etc.
  • n. A dull, heavy, stupid fellow; a dolt; a fool; a blockhead.
  • n. A post in the bridge of a pulp-vat on which the mold is placed to drain.
  • n. Ashes.
  • n. A unit of weight in use in different parts of Germany until the adoption of the metric system. It was equal to 5 centigrams, or three quarters of a grain troy.

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

  • n. hardy and sure-footed animal smaller and with longer ears than the horse
  • n. a pompous fool
  • n. the fleshy part of the human body that you sit on
  • n. slang for sexual intercourse


Middle English asse, from Old English assa, perhaps of Celtic origin, ultimately from Latin asinus.
Middle English ars, from Old English ears; see ors- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English as, ass, asse, from Old English assa ("male donkey") and assen ("female donkey"), from probable hypocoristic form of Old Irish asan, which entered the language through the Northumbrian dialect of Old English. The earlier form, from Proto-Germanic *asiluz (“ass, donkey”) appeared as Old English eosol ("ass, donkey") (compare Old High German esil ("ass, donkey"), Old Saxon esil ("ass, donkey"), Gothic  (asilus, "ass, donkey")). (Wiktionary)
Used chiefly in North America. From arse (used in the UK, Australia, New Zealand etc.) based on non-rhotic pronunciation (common in both England and US colonies – see bass, bust, and cuss), from Proto-Germanic} *arsaz. Cognates include the Old High German ars (German Arsch), Old Norse ars, Old Frisian ers and Ancient Greek ὄρρος (orros). Ultimately from Proto-Indo-European *h₃érsos (“backside, buttocks, butt”). (Wiktionary)



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  • "n. A post in the bridge of a pulp-vat on which the mold is placed to drain."
    -- from The Century Dictionary and Cyclopedia

    September 14, 2015

  • "It's embarrassing as fuck to have an ass!" - Tourette's Guy

    July 30, 2008