Shantytown in Brazil (6)
I believe the answer is:
favela
'shantytown in brazil' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for favela that I've seen before include "Shantytown in Brazil" , "(Brazilian) shack, shanty town; Alf, Eva (anag.)" , "Brazilian slum" , "Shanty town, especially in Brazil" , "Ramshackle town" .)