Window type (5)
'window type' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oriel that I've seen before include "Oxford college, founded 1326" , "Upper-story bay window" , "Upstairs bay window" , "Large recess - type of window" , "Form of bay window" .)
'window type' 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 "Side-opening window" , "a man deemed to have betrayed England" , "Window that opens with hinges on side, like a door" , "Vertical-hinged window" , "Hinged window sash" .)