Hinged window (8)
I believe the answer is:
casement
'hinged window' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for casement that I've seen before include "window frame" , "Poetic word for window" , "Type of window" , "Hinged window sash" , "Hinged window-sash" .)