Timbuktu's country (4)
I believe the answer is:
mali
'timbuktu's country' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mali that I've seen before include "African country, once French Sudan" , "Land" , "African country, former French colony" , "West African country, capital Bamako" , "Indian gardener; African republic" .)