nock

The groove at either end of a bow for holding the bowstring.

The notch in the end of an arrow that fits on the bowstring.

To put a nock in (a bow or arrow).

To fit (an arrow) to a bowstring.

To notch; make a notch in.

To place the notch of (the shaft or arrow) upon the string ready for shooting.

A notch; specifically, in archery, the notch on the end of an arrow (or the notched end itself), which rests on the string when shooting, or either of the notches on the horns of the bow where the string is fastened.

In sail-making, the foremost upper corner of boom-sails, and of staysails cut with a square tack.

The fundament; the breech.

A notch.