a gun, any kind of gun, due to shots going off, the gun tends to get hot, so they call it a heater caz you put it in your pants when u done
yo i know this nigga that brought out his heater and shot 2 shots up in the air
by A-M-R-O June 9, 2005
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A gun.
Any kind of gun.

It's called a Heater, Because when you pop shots off, You're attracting unwanted attention from the police. As such, The situation is getting "Heaty" due to the sound coming from the "Heater"
"Nine millimeter heater stashed in two-seaters"

- Eminem.
by ChillerTheBabyKiller April 22, 2005
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A quick, powerful punch. In most cases to the face.
Yoooooooo you see that?- Will
Nah what happened?- Jake
Ryan just hit that nigga wit a heater- Will
by ugotkuhmdawn February 11, 2020
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A gun, not always loaded, typically a 9mm hand gun. Used if loaded to shoot(DUH) Unloaded good for a bluff.
Dally: We can't walk alone at all. I started carrying a heater...

Ponyboy: Dally! You kill people with heaters!

Dally: You kill 'em with swtichblades too don't ya kid? Don't worry it ain't loaded. I ain't aimin' to get picked up for murder. But it sure does help a bluff.
by Littlexxpuppet January 4, 2011
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a gun usualy a .45 colt 1911 a popular handgun of the 1930's
"Tommy make sure you pack a heater for this job."
by .911.AZBDC December 29, 2007
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A cigarette. A dart; square. An amount of tabacco rolled or made for use of smoking.
Man, Chucky was so drunk last night, he threw back like a whole pack of heaters.
by Austin Tyrrell December 7, 2007
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