1. A sharp object used to perform many tasks such as cutting one's wrists, performing a castration on your bitchy old neighbors, and shanking.

Tom shanked Bill with my knife, Bill castrated Mike with Tom's knife, and Mike slit his wrists via Mike's knife.
by Sherpent October 21, 2008

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(noun) A ruthless killer with no simpathies for his enemies; (adj)To be ruthless in a game or when taking lives; (verb)To act completely ruthless and show no emotions when killing of playing a game.
(1)Jovan: Holy! Matt! You came out of nowhere!
Joe: He slaughtered all of us!
Gawain: Owies!
Matt: . . .
Joe: Man, Matt! You are so being Knives this night.
by Nicholas D. Wolfwood April 25, 2004

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When you take a shit and it feels like someone is stabbing your asshole.
Jessica: " did you just take a shit in my bathroom?'

Jerrod: " yea bitch, and it was a damn knife, im gonna be hurtin' fo days!"
by 3 lil babies February 11, 2011

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When you do anal with a girl and your dick is semi-flaccid.
Kyle: Dude theres spooning, forking, but theres no such thing as knifing!

Andrew: Bro i just knifed your mom last weekend!
by TheAmazingChan January 05, 2011

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n. pl. knives (nvz)
A cutting instrument consisting of a sharp blade attached to a handle.
A cutting edge; a blade.

v. knifed, knif·ing, knifes
v. tr.
To use a knife on, especially to stab; wound with a knife.
Informal. To betray or attempt to defeat by underhand means.
I'm gonna knife your brother if he ever touches my ride again.
by Gumba Gumba February 22, 2004

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An assassin. To assassinate. A term used to hide ones true intention.
Where can i find a Knife?
by Donkk August 16, 2007

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Something that is quiet often sticking out of "some cunts face"......weather or not that "cunt" is you.......who knows...
Knives cause pain.............wwwwwWWHHHHHOOOOOOHHHHOOOOooooo!
by penis-vagina February 25, 2005

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