Monkey or ape (6)
I believe the answer is:
simian
This clue is a double definition.
'monkey' is the first definition.
(thesaurus)
'ape' is the second definition.
(I've seen this in another clue)
(Other definitions for simian that I've seen before include "Resembling an ape or monkey" , "Relating to monkeys" , "Of monkeys and apes" , "Primate" , "Monkey-like" .)