|Language:||Middle Low German|
a round handle or thing that you turn to open a door, turn on a television etc:
He thought the door was locked, but he turned the knob and the door opened.
a brass door knob
I adjusted the volume knob and sat down.
a small piece of something [= lump]:
Melt a knob of butter in the pan.
3 British English spoken not polite
4 British English spoken old-fashioned
used especially by children to reply to an insult:
'You're fat and lazy.' 'Fat and lazy to you with brass knobs on!'