nook.
1. Corner of a room, i.e. interior angle formed by the meeting of two walls.

2. Piece taken out of an angle, e.g. where a reveal meets the exterior face of a wall and a reentrant angle is formed, giving two arrises instead of one.

3. Part of the corner of a room beside a fireplace, often with its own window, called an ingle-nook, sometimes treated as an alcove off a room providing a more intimate space.

Bibliography

C. M. Harris (1983);
Oxford English Dictionary (1933)

nook / noŏk/ • n. a corner or recess, esp. one offering seclusion or security: the nook beside the fire.PHRASES: every nook and cranny every part or aspect of something: the party reached into every nook and cranny of people's lives.

nook XIII (first in feower-noked four-cornered). of unkn. orig.