/nok/ , n.
1. a metal or plastic piece at the end of an arrow, having a notch for the bowstring.
2. a notch or groove at the end of an arrow into which the bowstring fits.
3. a notch or groove at each end of a bow, to hold the bowstring in place.
4. Naut. throat (def. 6a).
v.t.
5. to furnish with a nock.
6. to adjust (the arrow) to the bowstring, in readiness to shoot.
[ 1325-75; ME nok ( ke ) (n.); akin to D nok, LG nok ( ke ) tip ]