| Noun | 1. | ferret - ferret of prairie regions of United States; nearly extinct | |
| 2. | ferret - domesticated albino variety of the European polecat bred for hunting rats and rabbits | |
| Verb | 1. | ferret - hound or harry relentlesslyhound, hunt, trace - pursue or chase relentlessly; "The hunters traced the deer into the woods"; "the detectives hounded the suspect until they found the him" | |
| 2. | ferret - hunt with ferretshunt, hunt down, track down, run - pursue for food or sport (as of wild animals); "Goering often hunted wild boars in Poland"; "The dogs are running deer"; "The Duke hunted in these woods" | |
| 3. | ferret - search and discover through persistent investigation; "She ferreted out the truth"discover, find - make a discovery; "She found that he had lied to her"; "The story is false, so far as I can discover" | |