doing esceptionally well at something.
Usually followed by "it".
I saw their band last night and they were kilin' it.
by clrlt808 April 19, 2003
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Reference to Axe's double pits to chesty

To "kill" something you need to do it very well. After accomplishing something with great efficiency you are recommended to pump your fist to show people around you that you "killed it" also to signal people from a far distance that you killed it.
After getting test back with A+ "Killed it" *pumps fist*
by austins c00l August 19, 2009
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1. When someone says or does soemthing to destroy the current flow of rich interaction.

2. When someone does something or wears something that is too sensational to describe.
1. Someone tries to do "the macarena" at a hot dance.

2. "Ey yo, you killed it when you stole that nigga's toaster."
by Kakeson April 1, 2005
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tr. v. (figurative) also kill it, killin’ it
used when describing in brief an excellent or beyond satisfactory performance by any individual or team, used commonly to describe sports contests, musical performances, video game tourneys, etc
“yo were you at the guitar hero tournament
“yeah bro, ricky killed it ”
by shapesville January 5, 2012
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(adj.) something that has the potential to kill, destroy, or in any other way wreak havoc
That's quite a killful knife/spoon/other deadly utensil you have there, Mr. Assassin.
by g1235711 May 14, 2008
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