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mouse

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The definition of a mouse is a rodent in the Muridae or Cricetidae family, a shy person or a small hand-held device used to control the cursor on the computer display.

(noun)

An example of a mouse is the character Stuart Little.
An example of a mouse is a person who is afraid of anything.
An example of a mouse is a Logitech wireless mouse.

Mouse is defined as to hunt for something, especially mice.

(verb)

An example of to mouse is for a cat to hunt for dinner.

See mouse in Webster's New World College Dictionary

noun pl. mice

any of a large number of small, widespread rodents belonging to various families and having small ears and a long, thin tail, esp., a species (Mus musculus) that commonly infests buildings
1. Rare a girl or young woman: a term of endearment
2. a timid or spiritless person
Slang a dark, swollen bruise under the eye; black eye
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Origin: < the shape, motions required for use, and trailing tail-like cord of the earliest devices
Comput. a small, hand-held device that is moved about on a flat surface in front of a video screen in such a way as to move or position the cursor or part of the display

Origin: ME mous < OE mus, akin to Ger maus < IE *mūs, a mouse > Gr mys, L mus, mouse & musculus, muscle

intransitive verb moused, mousing

to hunt for or catch mice
to seek about or search for something busily and stealthily

transitive verb

to hunt for
Obsolete to tear or rend as a cat does a mouse

See mouse in American Heritage Dictionary 4

noun pl. mice mice (mīs)

a. Any of numerous small rodents of the families Muridae and Cricetidae, such as the common house mouse (Mus musculus), characteristically having a pointed snout, small rounded ears, and a long naked or almost hairless tail.
b. Any of various similar or related animals, such as the jumping mouse, the vole, or the jerboa.
A cowardly or timid person.
Informal A discolored swelling under the eye caused by a blow; a black eye.
pl. mice mice or mous·es (mousˈĭz) Computer Science A hand-held, button-activated input device that when rolled along a flat surface directs an indicator to move correspondingly about a computer screen, allowing the operator to move the indicator freely, as to select operations or manipulate text or graphics.