noun

• (archery) The notch at the rear of an arrow that fits on the bowstring.
  "He took his arrow by the nock."
• (nautical) The upper fore corner of a boom sail or trysail.

verb

• (transitive) To fit (an arrow) against the bowstring of a bow or crossbow.
  "Then taking up his own good stout bow and nocking an arrow with care, he shot with his very greatest skill."
• (transitive) To cut a nock in (usually in an arrow's base or the tips of a bow).
  "It is a Scotch bow, I see, for the upper nock is without and the lower within. By the black rood! it is a good piece of yew, well nocked, well strung, well waxed, and very joyful to the feel."

intj

• (archery) Fit the arrow to your bowstring.