Country formerly known as Nyasaland (6)
I believe the answer is:
malawi
'country formerly known as nyasaland' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for malawi that I've seen before include "Former Nyasaland" , "It was called Nyasaland" , "Country W. of Lake Nyasa" , "Central African country" , "Country in east central Africa" .)