to be de-pledged from a fraternity or sorority
He was kacked because he sucked as a pledge
by P-diddy April 03, 2004

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An injury on the shin typically recieved during mountain bike trials. Caused by the pedals ripping flesh from the rider.
Dude! Check out this gnarly kack I got riding yesterday!
by txfreerider January 04, 2007

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To bail out or to tell someone that you were going to do something and you don't show.
She said she could do something but the stupid fool kacked-out!
by Corissa August 10, 2004

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The strip of skin between the scrotum and anus.
She was rubbing my kack while sucking my cock.
by Dirty Bastard October 25, 2003

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it is exactly like the word pack, back and a lot of other words that ryhme with kack but it starts with a k instead of all the other letters
i was writing an essay when i said pack instead of kack
by Poopy Pooperson May 02, 2005

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