Senegal neighbor (4)
I believe the answer is:
mali
'senegal neighbor' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mali that I've seen before include "Timbuktu is in this landlocked country" , "African country, former French colony" , "African state's" , "African country, once French Sudan" , "Send mail out to Africa" .)