hea
ter
Plural
heaters
1
a piece of equipment that produces heat to warm a place or increase the temperature of water
- She turned on the heater to warm up the room.
- The heater is essential during the chilly nights.
- The heater makes a humming sound when it's on.
- The heater's thermostat controls the temperature.
- They turned off the heater when they left the house.
Synonyms: