DictionaryAI

mouse

MOWS/maʊs/

Pluralmice, mouses

Verbmouses, mousing, moused

15 meanings of mouse

Practice

  1. 1
    small rodentnouncountable
    A small rodent with a pointed snout, rounded ears and a long thin tail; also any similar small animal.

    A mouse had been nibbling at the seeds stored in the shed.

    A gray house mouse darted across the kitchen floor and vanished under the refrigerator.

    UsageThe plural is mice: two mice (not incorrect: two mouses).

    Note

    In science writing this is the laboratory animal, as in Sandee LaMotte's 2022 report on David Sinclair's lab at Harvard Medical School, where old mice are growing young again.

    Checked 2 Nov 2026 · 2 facts

    • Sandee LaMotte published the referenced report in 2022. abc17news.com
    • The report describes old mice growing young again in David Sinclair’s laboratory at Harvard Medical School. abc17news.com
  2. 2
    computer devicenouncountable
    A small hand-held device moved on a flat surface to control a pointer on a computer screen; also loosely the pointer itself.

    He replaced his worn-out mouse with a quieter wireless model.

    A responsive mouse makes detailed photo editing far less frustrating.

    UsagePlural most often mice, sometimes mouses. In careful writing the arrow on screen is the pointer or cursor.

  3. 3
    navigate (computer)verbintransitive
    To navigate on a computer by means of a mouse.

    Users mouse through the nested menus to find the setting they need.

    She moused across the toolbar, hunting for the crop tool.

    UsageMostly with a direction word: mouse over an icon, mouse to the File menu.

    Note

    MacUser in 1988 describes someone who had just moused to the File menu, and Daniel Tunkelang's Faceted Search (2009) speaks of mousing over facet elements. The pattern mouse over is the one that stuck, naming the act of hovering the pointer over something without clicking.

    Checked 2 Nov 2026 · 3 facts

Practice

Can you tell the meanings of mouse apart? Answer 3 quick questions from this page, or write your own sentence and AI will check it.

Origin

The word comes from Middle English mous and Old English mūs, tracing back through Proto-Germanic *mūs to the Proto-Indo-European root *múHs. It has many relatives, including German Maus, Dutch muis, Latin mūs, and Ancient Greek mûs. The computing sense is first recorded in a 1965 report led by American engineer Bill English, and the device was named for its resemblance to the animal.

Checked 1 Nov 2026 · 7 facts

  • Mouse descends through Middle English mous, Old English mūs and Proto-Germanic *mūs from Proto-Indo-European *múHs. en.wiktionary.org
  • German Maus and Dutch muis are cognates. en.wiktionary.org
  • Latin mūs and Ancient Greek mûs are cognates. en.wiktionary.org
  • The earliest recorded computing use is in the 1965 report Computer-Aided Display Control. en.wikipedia.org
  • Bill English led the report. srialumni.org
  • Bill English was an American engineer. en.wikipedia.org
  • The device was named for its resemblance to a mouse. sri.com