Place in the heart of Rajputana (3)
I believe the answer is:
put
'place' is the definition.
('put' can be a synonym of 'place')
'heart of rajputana' is the wordplay.
'heart of' indicates a hidden word.
'PUT' is hidden within 'rajputana'.
'in the' is the link.
(Other definitions for put that I've seen before include "Set (in place)" , "Place in a position" , "Place, lay" , "Place; placed" , "Place in a location" .)