Havana's home (4)
I believe the answer is:
cuba
'havana's home' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cuba that I've seen before include "Caribbean island republic" , "Guantanamo Bay island" , "Largest West Indies island" , "Island N. of Jamaica" , "Largest Caribbean island" .)