In obsolete terms the difference between fitchet and fitchew
is that fitchet is the fitchew, or polecat while fitchew is polecat.
fitchet
English
Noun
(
en noun)
(obsolete) The fitchew, or polecat.
* 1800 , The Lady's Magazine or Entertaining Companion for the Fair Sex: Volume 31 (page 522)
- The South American fitchet inhabits the regions of Guiana