knaps

/N AE1 P S/
verb
  1. 1

    To shape a brittle material having conchoidal fracture, usually a mineral (flint, obsidian, chert etc.), by breaking away flakes, often forming a sharp edge or point.

  2. 2

    To rap or strike sharply.

  3. 3

    To bite; to bite off; to break short.

  4. 4

    To make a sound of snapping.

Synonyms

Source: https://en.wiktionary.org/wiki/knap, https://en.wiktionary.org/wiki/knaps