Caught primate on headland (4)
I believe the answer is:
cape
'headland' is the definition.
(I've seen this in another clue)
'caught primate on' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'primate' becomes 'ape' (large primate).
'on' says to put letters next to each other.
'c'+'ape'='CAPE'
(Other definitions for cape that I've seen before include "Garment - promontory" , "Point of land jutting out into the water" , "Florida space flight centre" , "Loose cloak or promontory" , "An old cloak or a headland" .)