mouse
noun
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any of numerous small rodents typically resembling diminutive rats having pointed snouts and small ears on elongated bodies with slender, usually hairless, tails“I spotted a mouse running through the garden.”
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a hand-operated electronic device that controls the coordinates of a cursor on your computer screen as you move it around“I used my mouse move the cursor on the computer screen.”computer mouse
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person who is quiet or timid“I'm a mouse at parties – I'd rather be at home.”
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a swollen bruise caused by a blow to the eyeshiner
verb
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to manipulate the mouse of a computer“I moused over the window in order to close it.”
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to go stealthily or furtively“I moused into the hallway so as not to wake anyone.”creep