Congo's former name (5)
I believe the answer is:
zaire
'congo's former name' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for zaire that I've seen before include "Democratic Republic of the Congo, formerly" , "Former name of DRC" , "Central African country's former name" , "Previous name of Congo" , "Old name for African republic" .)