An animal of the Weasel family (Mustela furo syn. Putorius furo), about fourteen inches in length, of a pale yellow or white color, with red eyes. It is a native of Africa, but has been domesticated in Europe. Ferrets are used to drive rabbits and rats out of their holes. They are sometimes kept as pets.
To drive or hunt out of a lurking place, as a ferret does the cony; to search out by patient and sagacious efforts; -- often used with out; as, to ferret out a secret.