Definition of weasel noun from the Oxford Advanced Learner's Dictionary

 

weasel

 noun
noun
BrE BrE//ˈwiːzl//
 
; NAmE NAmE//ˈwiːzl//
 
Wild mammals
 
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a small wild animal with reddish-brown fur, a long thin body and short legs. Weasels eat smaller animals. See related entries: Wild mammals Word Origin Old English wesle, wesule, of West Germanic origin; related to Dutch wezel and German Wiesel.
See the Oxford Advanced American Dictionary entry: weasel