City of the Taj Mahal (4)
I believe the answer is:
agra
'city of the taj mahal' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for agra that I've seen before include "Taj Mahal's city" , "City in India" , "Foreign city" , "mausoleum site" , "Not tight" .)