Source : Webster's Revised Unabridged Dictionary (1913)

Nook \Nook\, n. [OE. nok; cf. Gael. & Ir. niuc.]
   A narrow place formed by an angle in bodies or between
   bodies; a corner; a recess; a secluded retreat.

         How couldst thou find this dark, sequestered nook?
                                                  --Milton.

Source : WordNet®

nook
     n 1: a sheltered and secluded place
     2: an interior angle formed be two meeting walls; "a piano was
        in one corner of the room" [syn: {corner}]