Caught gorilla with a cloak (4)
I believe the answer is:
cape
'cloak' is the definition.
(I know that cape is a type of cloak)
'caught gorilla' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'gorilla' becomes 'ape' (gorillas are apes).
'c'+'ape'='CAPE'
'with a' acts as a link.
(Other definitions for cape that I've seen before include "Cloak; head" , "Notorious Chilean headland" , "Horn or Good Hope - cloak" , "Batman has one" , "Short sleeveless garment" .)