New dove, new county (5)
I believe the answer is:
devon
'county' is the definition.
(I've seen this before)
'new dove new' is the wordplay.
'new' is an anagram indicator.
'new' becomes 'n'.
'dove' anagrammed gives 'devo'.
'devo'+'n'='DEVON'
(Other definitions for devon that I've seen before include "English county" , "Raleigh's county" , "County in SW England" , "County in southwestern England" , "West country county" .)