Gorillas and chimps (4)
I believe the answer is:
apes
'gorillas and chimps' 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 "Imitates in every aspect" , "Species of primate" , "Mimics like primates" , "Peas (anag)" , "Parrots" .)