weasel: Meaning and Definition of

wea•sel

1. any small carnivore of the genus Mustela, of the family Mustelidae, having a long, slender body and feeding chiefly on small rodents.
2. any of various similar animals of the family Mustelidae.
3. a cunning, sneaky person.
4. a tracked vehicle resembling a tractor, used in snow.
5. an informer; stool pigeon.

1. to evade an obligation, duty, or the like; renege (often fol. by out): That's one invitation I'd like to weasel out of.
2. to use weasel words; be ambiguous; mislead: Upon cross-examination the witness began to weasel.
3. to inform.