squint

An oblique opening in the interior wall of a medieval church to afford a view of the high altar for persons in the transepts or aisles; a hagioscope. Photo from Wikipedia. (Saylor, 1952)
An oblique opening in the interior wall of a medieval church to afford a view of the high altar for persons in the transepts or aisles; a hagioscope. Photo from Wikipedia. (Saylor, 1952)