Exquisite parts in Winchester area (4)
I believe the answer is:
rare
'exquisite' is the definition.
(thesaurus)
'parts in winchester area' is the wordplay.
'parts in' indicates the answer is hidden within the clue (I've seen 'part in' mean this).
'RARE' is hidden within 'winchester area'.
(Other definitions for rare that I've seen before include "difficult to find?" , "Not easily come by like undercooked meat" , "Bloody (of steaks)" , "Seldom encountered" , "Occurring infrequently" .)