Cardiff's country (5)
I believe the answer is:
wales
'cardiff's country' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for wales that I've seen before include "Its emblem is the leek" , "Principality, part of the UK" , "chooses" , "Cymru" , "Land of Dai and Dylan" .)