radiator

noun
UK /ˈreɪ.di.eɪ.tər/
US /ˈreɪ.di.eɪ.tɚ/

A radiator is a metal thing that makes a room warm.

The cat likes to sleep next to the radiator in winter.


OTHER MEANINGS

2. The part of a car that cools the engine.

Steam rose from the car's radiator after the long drive.

3. A device that sends out heat or energy, such as in electronics.

The antenna acts as a radiator of radio waves.

4. A surface that gives off heat into a space.

The old building used a cast-iron radiator along the wall.