Fitch (7)
I believe the answer is:
polecat
'fitch' is the definition.
(I know that fitch can be written as polecat)
This is all the clue.
(Other definitions for polecat that I've seen before include "American skunk" , "Kind of weasel, called skunk in America" , "weaselly type" , "Unpleasant-smelling woodland animal" , "Smelly animal" .)