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A mouse (rodent).
A computer mouse.



From Middle English mous, from Old English mūs, from Proto-Germanic *mūs, from Proto-Indo-European *muh₂s.


mouse ‎(plural mice)

  1. Any small rodent of the genus Mus.
    • 1893, Walter Besant, The Ivory Gate, chapter II:
      At twilight in the summer there is never anybody to fear—man, woman, or cat—in the chambers and at that hour the mice come out. They do not eat parchment or foolscap or red tape, but they eat the luncheon crumbs.
  2. (informal) A member of the many small rodent and marsupial species resembling such a rodent.
  3. A quiet or shy person.
  4. (computing) (plural mice or, rarely, mouses) An input device that is moved over a pad or other flat surface to produce a corresponding movement of a pointer on a graphical display.
  5. (boxing) Hematoma.
  6. (nautical) A turn or lashing of spun yarn or small stuff, or a metallic clasp or fastening, uniting the point and shank of a hook to prevent its unhooking or straighening out.
  7. (obsolete) A familiar term of endearment.
    (Can we find and add a quotation of Shakespeare to this entry?)
  8. A match used in firing guns or blasting.
  9. (set theory) A small model of (a fragment of) Zermelo-Fraenkel set theory with desirable properties (depending on the context).


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mouse ‎(third-person singular simple present mouses, present participle mousing, simple past and past participle moused)

  1. (intransitive) To move cautiously or furtively, in the manner of a mouse (the rodent) (frequently used in the phrasal verb to mouse around).
  2. (intransitive) To hunt or catch mice (the rodents), usually of cats.
  3. (transitive, nautical) To close the mouth of a hook by a careful binding of marline or wire.
    Captain Higgins moused the hook with a bit of marline to prevent the block beckets from falling out under slack.
  4. (intransitive, computing) To navigate by means of a computer mouse.
    • 1988, MacUser: Volume 4
      I had just moused to the File menu and the pull-down menu repeated the menu bar's hue a dozen shades lighter.
    • 2009, Daniel Tunkelang, Faceted Search (page 35)
      Unlike the Flamenco work, the Relation Browser allows users to quickly explore a document space using dynamic queries issued by mousing over facet elements in the interface.
  5. (obsolete, nonce word, transitive) To tear, as a cat devours a mouse.
    • Shakespeare
      [Death] mousing the flesh of men.

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mouse m ‎(invariable)

  1. (computing) mouse (for a PC)

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mouse m (plural mouses)

  1. (Brazilian Portuguese, computing) mouse (for a PC)


For usage examples of this term, see Citations:mouse.



mouse m ‎(plural mouses)

  1. (computing, chiefly Latin America) mouse (input device)