in Biblical times, it meant to sleep with someone. you will see the word used in the Bible to mean that.
God: "Abe, you knew your maidwoman as well as Sarah? And she gave birth to that bastard of yours, Ishmael?"

Abraham (boasting his double scoring): "Yep, God. My sons are Isaac and Ishmael."
by terrell mateo May 28, 2003
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"As we know, there are known knowns.There are things we know we know. We also know there are known unknowns. That is to say,we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know."
by The Ender December 7, 2003
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Understanding, at this moment, or the opposite of yes, depending on how much of an idiot you are.
1) I know what you're talking about.
2) Right know im a little confused.
3) i haev know idea wut ur talking about lol
by ddt June 28, 2004
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to have sex with
by Anonymous December 12, 2002
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the most killer band ever created. the name is based on a song by system of a down. it was started in nashville, tn by tom-guitar, alex-guitar, miller-guitar, and gena-bass. ryan-drums and jackson-guitar joined to record the first album, "know." michael-keyboard tried to join, but it didnt work out. sadly, due to unknown circumstances, the band has fallen apart and has stopped creating music.
alex: band meeting, my house!
tom: ok call me
miller: band meeting, your house.
gena: what? why dont we ever keep any of our stuff? our band sucks
by russian555 August 2, 2005
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Just another way of saying no.
Can she go? I, er, know.
P.S. Don’t accept know for an answer.
by Hercolena Oliver April 17, 2009
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