Definition of "nock"

nock¹

/ˈnɒk/

noun
plural nocks
1. Either of the two grooves in a bow that hold the bowstring.
2. (archery) The notch at the rear of an arrow that fits on the bowstring.
  Quotations
  He took his arrow by the nock.The spelling has been modernized.
  , Homer, “(please specify |book=I to XXIV)”, in Geo[rge] Chapman, transl., The Iliads of Homer Prince of Poets. […], London: […] Nathaniell Butter; The Iliads of Homer, Prince of Poets, […], new edition, volumes (please specify the book number), London: Charles Knight and Co., […], 1843,
3. (nautical) The upper fore corner of a boom sail or trysail.
verb
third-person singular simple present nocks, present participle nocking, simple past and past participle nocked
1. (transitive) To fit an arrow against the bowstring of a bow or crossbow. (See also notch (verb).)
2. (transitive) To cut a nock in (usually in an arrow's base or the tips of a bow).

/ˈnɒk/