West Country female (5)
I believe the answer is:
woman
'female' is the definition.
(I know that female can be written as woman)
'west country' is the wordplay.
'west' becomes 'W' (abbreviation).
'country' becomes 'oman' (Oman is an example).
'w'+'oman'='WOMAN'
(Other definitions for woman that I've seen before include "Mature female" , "With 1a [NEW] a freedom fighter" , "Adult female" , "Lady" , "See 16" .)