Chimp or gorilla (3)
I believe the answer is:
ape
I believe this is a double definition.
'chimp' is the first definition.
(thesaurus)
'gorilla' is the second definition.
(I've seen this before)
(Other definitions for ape that I've seen before include "Take off" , "Simian - copy" , "Anthropoid primate" , "Our cousin" , "Monkey" .)