heater

1. A device that produces and radiates heat, typically to raise the temperature of a room or building. · Turn on the heater; I'm cold.
2. A person who heats something, for example in metalworking.
3. A handgun. (dated, slang) · The thug pumped two rounds from his heater into her.
4. A fastball, especially one thrown at high velocity. (slang) · Jones threw a heater under his chin.
5. An extended winning streak. (slang) · Emmy went on a heater in Las Vegas and came back six thousand dollars richer.
6. A medieval European shield having a rounded triangle shape like a clothes iron.
7. A dead heat; a race in which two or more competitors reach the finish line simultaneously.
8. Synonym of banger (“a powerfully energetic or exceptional song”). (slang)

Plural heaters