noun ·see knop.
2. knob ·noun a rounded hill or mountain; as, the pilot knob.
3. knob ·vi to grow into knobs or bunches; to become knobbed.
4. knob ·noun a knoblike ornament or handle; as, the knob of a lock, door, or drawer.
5. knob ·noun a hard protuberance; a hard swelling or rising; a bunch; a lump; as, a knob in the flesh, or on a bone.