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A small or short mouse-like animal.

Someone who is very quiet and withdrawn and seems to blend into the woodwork.

Can be used as an endearing phrase or a put-down, depending on the inflection.
1) I love my little shmousie sized cat; she fits on my lap just perfectly.

2) That shmouse over by the bar better not ask me to dance, 'cause I'll just laugh in his face.
by Shmouse May 19, 2005
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