Quipu maker (4)
I believe the answer is:
inca
'quipu maker' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for inca that I've seen before include "Ruler of an old empire centred on Cuzco" , "An old Peruvian like Cain" , "Very old Peruvian (4)." , "mountain dweller" , "Member of Andean people conquered by Spain" .)