reveal

The vertical side of an opening in a wall. When the opening is bigger on one side of the wall than the other, the reveals are described as splayed.

'Mackintosh Architecture' led by The Hunterian, University of Glasgow, funded by the Arts and Humanities Research Council; with additional support from The Monument Trust, The Pilgrim Trust, and the Paul Mellon Centre for Studies in British Art; and collaborative input from Historic Scotland and the Royal Commission on the Ancient and Historical Monuments of Scotland.