Country of the heiress? (4)
I believe the answer is:
eire
'country' is the definition.
(Eire is an example)
'of the heiress?' is the wordplay.
'of' says the answer is hidden in the clue.
'EIRE' can be found hidden inside 'heiress'.
(Other definitions for eire that I've seen before include "Look for (something to happen)" , "Breakaway state" , "Southern Ireland" , "Land" , "Gaelic name for Republic of Ireland" .)