knob Meaning, Definition & Usage

  1. noun a circular rounded projection or protuberance
    boss.
  2. noun a round handle
  3. noun any thickened enlargement
    node; thickening.
  4. noun an ornament in the shape of a ball on the hilt of a sword or dagger
    pommel.

WordNet

Knob noun
Etymology
A modification of knop. Cf. Nob.
Definitions
  1. A hard protuberance; a hard swelling or rising; a bunch; a lump; as, a knob in the flesh, or on a bone.
  2. A knoblike ornament or handle; as, the knob of a lock, door, or drawer. Chaucer.
  3. A rounded hill or mountain; as, the Pilot Knob. U. S. Bartlett.
  4. (Arch.) See Knop.
Knob intransitive verb
Definitions
  1. To grow into knobs or bunches; to become knobbed. Obs. Drant.

Webster 1913