Learner's definition of MOUSE
[count]
1
: a very small animal that has a pointed nose and a long, thin tail老鼠;耗子 -
The house was infested with mice and rats.这所房子大小老鼠成灾。
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a field mouse [=a type of mouse that lives in fields]田鼠
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a house mouse [=a type of mouse that lives in people's houses]家鼠
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sometimes used figuratively to refer to a weak, frightened, or quiet person有时用作比喻,指懦弱、受到惊吓或性情安静的人 — see picture at rodent 2
plural also mouses : a small device that is connected to a computer and that you move with your hand to control the movement of a pointer on the computer screen鼠标 — see picture at computer