thermostatknob

noun
UK /ˈθɜːməstæt nɒb/
US /ˈθɜːrməstæt nɑːb/

A small round handle you turn to make a room warmer or cooler.

She turned the thermostatknob to make the house warmer.


OTHER MEANINGS

2. The rotating part on a heating or cooling device that sets the desired temperature.

The thermostatknob on the old radiator was stiff and hard to turn.

3. A knob used to switch a climate system on, off, or to a set level.

He twisted the thermostatknob until the air conditioning clicked on.

4. A small handle on a wall-mounted temperature control unit.

The thermostatknob in the hallway was set to twenty degrees.