Chimps and gorillas (4)
I believe the answer is:
apes
'chimps and gorillas' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for apes that I've seen before include "Large primates" , "Imitates like primates" , "Zoo animals" , "Copies the primates?" , "Parrots" .)