heater

A device that produces and radiates heat, typically to raise the temperature of a room or building.

Turn on the heater; I'm cold.

“First you've got to sit up and go into the tackroom, because you are soaking wet. And shivering.” […] The tackroom was cold, so Sam turned on the kerosene heater and found a wool cooler and wrapped her in it.

A person who heats something, for example in metalworking.

A gun.

The thug pumped two rounds from his heater into her.

A fastball, especially one thrown at high velocity.

Jones threw a heater under his chin.

An extended winning streak.

Emmy went on a heater in Las Vegas and came back six thousand dollars richer.

A surname.