To mack is to chill. also can be used as macking (sometimes spelled maccin). Usually used when wanting someone to calm down.
"Hey wassup?"
"nm, maccing, u?"

by Dee-Money$$$$ August 14, 2011
1) to pick up women; performed best when the man oscillates his arms back and forth while shifting his weight from leg to leg

2) to engage in sexual intercourse

3) to successfully complete an assignment (e.g. homework)

4) to thoroughly consume a meal
Look at Joe over there macking on those chicks! He's really busting the moves out tonight!

We were gonna mack, but I forgot my rubbers.

I'll be staying up late tonight. I have to mack my history paper.

He MACKED those gorditas!
by Z_19 December 19, 2009
to hit on a girl; A male flirt
I'm gonna go mack on that chick over there.
by Greg H March 17, 2003
A mack is a pimp's pimp. As a pimp controls his hos, a mack controls his pimps.
"Don't you see? All these pimps that you be seeing, I run them motherfuckers. I'm called a MACK. Better recognize."
by E~Dogg December 29, 2006
to flirt with or seduce
I'm going to lay the mack down.
by Mackster March 24, 2006
Nine ounces of cocaine.
I'm gonna need about a mack.
by Out in the zone May 29, 2011
1.) To flirt with, seduce, or talk to with the intentions of pursuing some kind of relationship or hook up.
2.) To eat epically or with force

1.) Dude, Thomas was macking on Ansley hardcore last night!

2.) Did you see David mack on you lady earlier? You better watch out.
by mackattackjack May 25, 2010

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