Native Peruvian (4)
I believe the answer is:
inca
'native peruvian' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for inca that I've seen before include "Native Peruvian" , "mountain dweller" , "Ruler of an old empire centred on Cuzco" , "Language" , "Old Peruvian descended from Cain" .)