knobs
nounUK /nɒbz/
US /nɑːbz/
Knobs are round handles you turn or pull to open things.
She turned the knobs on the radio to make the music louder.
OTHER MEANINGS
2. Small round lumps or bumps on a surface.
The tree trunk was covered in knobs and knots.
3. A small amount of butter or another soft food shaped into a ball.
He added a knob of butter to the pan.
4. A rounded control on a machine that you turn.
Turn the knob to start the oven.