Having a concealed firearm for protection or to carry out violence.
"Don't come to Brick City, unless yo' packing heat."
To carry a firearm. Usually refers to the act of carrying a handgun.
Not many people know it, but sweet little old lady Smith is always packing heat.
To be in possession of concealed firearms. To be carrying
"He is packing some serious heat under that trenchcoat"
The concept of one's penis size being large while during a flaccid state.
"I saw his bulge, he must be packing heat!"
A term referring to carrying a weapon with you. A small example is a concealed weapon, but a better one would be being heavily-armed with a machinegun.
"Daniel Pearl should've been packing heat over there. Damn customs."
Carrying a weapon such as a Gun or knife
Yo dat catz packin heat forreal
A word used often in reference to a women with a very large rack.
Damn! She is packing heat.