Cardiff's land (5)
I believe the answer is:
wales
'cardiff's land' 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 "Part of Great Britain" , "chooses" , "Home nation wearing red shirts for rugby" , "Its emblem is the leek" , "Home to Snowdonia and the Gower Peninsula" .)