Part of speech: Verb
hunt with ferrets
Categories: Hunt, Run, Hunt down, Track down
Part of speech: Verb
hound or harry relentlessly
Categories: Hound, Hunt, Trace
Mustela nigripes, Ferret out, Ferret, Black-footed ferret
The word "ferret" was borrowed from Italian fioretto. It started in Latin fūr. Then it appeared in Vulgar Latin *furittum. Later, people used it in Old French furet. After that, it was Middle English furet.
A word passing through this many languages survived because it named something universally important.