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 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 gun,gat,burner, 50 cent packs heat yo
You got clapped by joshes heater
by Jay Co October 19, 2004
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la pistola aka pistol. you call it that cuz you got sumthin hot for them.
"say fool, you gotcher heater on you?"

"dont leave home with out it"
by who dat January 9, 2005
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when a woman holds her mouth on a guys crotch with his pants on and blows hot air into them and warms up his dick
"man, i love it when my girl feels awnry and she teases me with a heater"!
by the naked nuker August 31, 2009
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