Township in Johannesburg (6)
I believe the answer is:
soweto
'township in johannesburg' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for soweto that I've seen before include "place in Africa" , "S. African urban area" , "Group of townships in South Africa" , "Owes to the South African township" , "South African township area" .)