Opening or partly closing a temple (4)
I believe the answer is:
gate
'opening' is the definition.
(a gate is an opening or entrance)
'partly closing a temple' is the wordplay.
'partly' says the answer is hidden in the clue (part of the clue is used).
'GATE' is hidden in the letters of 'closing a temple'.
'or' is the link.
(Other definitions for gate that I've seen before include "Hinged barrier in an entrance" , "Field entrance" , "Entrance; street" , "Opening in a wall or fence" , "Number attending" .)