Ferret n. : An animal of the Weasel family (Mustela / 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.

Ferret n. : 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.

Ferret n. : A kind of narrow tape, usually made of woolen; sometimes of cotton or silk; -- called also ferreting.

Ferret n. : The iron used for trying the melted glass to see if is fit to work, and for shaping the rings at the mouths of bottles.

Example:
How can I Ferret proof and what are foods poisonous to Ferrets?

Taxonomy
ferrets, pet ferrets, pets, ferrets as pets, animals, food, keeping ferrets, teeth, ferret insulinoma, polecat, American Ferret Association, Black-footed Ferret, adrenal disease, United States, tick, hunting, rabbits, New Zealand.

Defination from the web:
ferret is a very close relative of the polecat, but it is as yet unclear whether it is a domesticated form of the European Polecat, the ... The ferret's posture may become rigid with wide open jaws, momentary eye contact followed by thrashing or turning of the head from side to side, ...