WordLens

heater

1 of 1noun
/ˈhitər/
Forms:heaters
1

a piece of equipment that produces heat to warm a place or increase the temperature of water

A2
  • 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:
2

(baseball) a pitch thrown with maximum velocity