Source : Webster's Revised Unabridged Dictionary (1913)

Fitchet \Fitch"et\, Fitchew \Fitch"ew\, n. [Cf. OF. fisseau,
   fissel, OD. fisse, visse, vitsche, D. vies nasty, loathsome,
   E. fizz.] (Zo["o]l.)
   The European polecat ({Putorius f[oe]tidus}). See {Polecat}.