Definition:
1. small carnivore of the genus Mustela, of the family Mustelidae, having a long, slender body and feeding chiefly on small rodents.
2. a cunning, sneaky person.
3. a tracked vehicle resembling a tractor, used in snow.
4. to evade an obligation, duty, or the like; renege (often fol. by out): That's one invitation I'd like to weasel out of.
5. to use weasel words; be ambiguous; mislead: Upon cross-examination the witness began to weasel.
Matching quite well with the description...
