N

Nock:
[1] The end of an arrow with a notch in it for the string.
[2] The grooves in the tips of the limbs of bow to fit the bowstring.
[3] The act of fitting an arrow to the string.
[4] The command to fit an arrow to the string. i.e. "nock, draw, loose!"

Nocking point:
The place on the bowstring where the arrow is placed for shooting.

Nut:
The part of the release mechanism of a crossbow where the string sits when the crossbow is drawn.