Apelike (6)
I believe the answer is:
simian
'apelike' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for simian that I've seen before include "Of or like monkeys" , "Ape-like - in Siam (anag)" , "Monkey-like" , "Relating to monkeys" , "Like an ape or monkey" .)