A corner of a room or other enclosed space, esp. viewed internally or as a retreating space; a recess, a nook. Also figurative.

An out-of-the-way corner in or among buildings or similar surroundings.

A place providing privacy or seclusion for the purposes of prayer, study, or meditation, or for rest and relaxation; a quiet or secluded dwelling or…

Of a place: situated apart from the general body of a larger place or thing; out of the way. Chiefly in odd corner. Cf. sense A. 7b. Also figurative.

A remote and secluded spot, a secret or private place. Now rare.

With other nouns, chiefly with the sense ‘lying or leading off from the main trunk, body, or area’, as in off-branch, off-corner, off-drain, off flow…

= cubby-hole n., cubby-house n. at compounds.