Early Peruvians (5)
I believe the answer is:
incas
'early peruvians' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for incas that I've seen before include "People of ancient Peru" , "Ancient inhabitants of Peru" , "Ancient Peruvians" , "Members of ancient Peruvian race" , "Old people coming from South America" .)