B1
a machine that heats air or water
Dictionary examples:
My cat loves the heater so much, I think it's planning to marry it! (0.0)
I love my heater so much, I might take it on vacation with me! (0.0)
My roommate talks to the heater more than to me. Should I be jealous? (0.0)
Turn your water heater down to 120 degrees to save energy. (26.4)
The heater comes on automatically. (30.6)