West country skinhead is wimp (4)
I believe the answer is:
wuss
'is wimp' is the definition.
(I've seen this in another clue)
'west country skinhead' is the wordplay.
'west' becomes 'W' (abbreviation).
'country' becomes 'US' (United States).
'skinhead' becomes 's' (head letter of 'skin').
'w'+'us'+'s'='WUSS'
(Other definitions for wuss that I've seen before include "Weak person" , "Excessively timid person" .)