[wea.sel] n, pl weasels [ME wesele, fr. OE weosule; akin to OHG wisula weasel] (bef. 12c) 1 or pl weasel : any of various small slender active carnivorous mammals (genus Mustela of the family Mustelidae, the weasel family) that are able to prey on animals (as rabbits) larger than themselves, are mostly reddish brown with white or yellowish underparts, and in northern forms turn white in winter
2: a light self-propelled tracked vehicle built either for traveling over snow, ice, or sand or as an amphibious vehicle
[2]weasel vi wea.seled ; wea.sel.ing [weasel word] (1900) 1: to use weasel words: equivocate
2: to escape from or evade a situation or obligation--often used with out