knobnoun [ C ]uk /nɒb/ us /nɑːb/
knob noun [ C ] (ROUND OBJECT)
- Turn the knob in a clockwise direction.
- He pulled the knob and it just came off in his hand.
- She turned the door knob and quietly opened the door.
- Twiddle a knob on a radio in Britain and you may hear more voices speaking crackly French or German than English.
- At the twiddle of a knob the operators can focus on a tiny amount of airspace or scan the whole area.