DictionaryAI

mouse

MOWS/maʊs/

Pluralmice, mouses

Verbmouses, mousing, moused

15 meanings of mouse

Practice

  1. 1
    small rodentnouncountable
    A small furry animal with a pointed nose, round ears and a long thin tail.

    A tiny mouse ran across the kitchen floor and vanished under the stove.

    The cat sat very still, watching a mouse near the bag of grain.

    UsageOne mouse, two mice.

    Note
  2. 2
    computer devicenouncountable
    A small device you move with your hand to control the arrow on a computer screen.

    Like a TV remote, but moving it moves the arrow on your screen.

    Click the left button on your mouse to open the file.

    She slid the mouse across the desk and clicked its left button twice.

    UsageTwo mice for computers too. The arrow is the pointer.

  3. 3
    navigate (computer)verbintransitive
    To move around on a computer screen by using a mouse.

    You can mouse over the icon to see what it is called.

    You can mouse over a word to see its meaning.

    UsageSay mouse over something: move the arrow onto it.

    Note

Practice

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Origin

It comes from Old English mūs, going back to an ancient Proto-Indo-European root. The computer meaning first appears in a 1965 report led by engineer Bill English, and the name came from the device looking like the animal.

Checked 1 Nov 2026 · 5 facts

  • Mouse descends from Old English mūs and ultimately a Proto-Indo-European root. 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 engineer. en.wikipedia.org
  • The device's resemblance to a mouse explains its name. sri.com