Knāg, n.

noun

(nāg), n. [Prov. Ger. knagge, Sw. knagg, a knot in wood, Dan. knag, a hook to hang clothes on, a bracket; Gael. & Ir. cnag, peg, knob.]

  1. A knot in wood, or a protuberant knot; a wart.
  2. A peg for hanging things on.
  3. A shoot of deer’s horn.

Horns . . . most dangerous by reason of their sharp and branching knags. Holland. 4. The rugged top of a hill. Halliwell.