Gibbon or gorilla (3)
I believe the answer is:
This clue is a double definition.
'gibbon' is the first definition.
(I've seen this in another clue)
'gorilla' is the second definition.
(I've seen this in another clue)
(Other definitions for ape that I've seen before include "Wild animal" , "Anthropoid primate" , "Imitate, clumsy person (colloq.)" , "Closely follow" , "gorilla" .)