Book

Means cool or awesome.

How was it Originated?

While text messaging, when you hit 2665 (trying to say cool) it will come out as book.
"Thats book, yo!"

"Book? You mean cool right?"

"Ya. LOL. thats COOL, yo."
by Katie Delaney January 25, 2008
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Book

to gtfo as fast as possible
Dude, he's got a gun, let's book!!
by Jsam March 23, 2015
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book

A book is about entertainment,fun, and laughter, sometimes u even get to learn new lessons in life when u read a book
This book is so entertaining and fun.
by my dictionary March 14, 2016
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That's Book

Something that is so interesting/intriguing, that conventional sayings can't fully depict the awesomeness that was witnessed.
Speaker One: She lifted a house with one finger.
Speaker Two: That's book.
by trophy2 February 07, 2010
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Booked

That Bitch Is Booked Like A Fukin Library.
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Booked

its Over, to end, ended, put it away, to end forever. To leave, leave in a hurry, to hide, to get rid of. Done, finish.
I am tired of this, just bookit.

Are you booking?

Lets book early.

She is booking her feelings for him.

What are you doing here, you've been booked.
He books early every time.
F'it, book it now!
Have you booked you homework?
by WmDave October 13, 2009
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BOOK

a synonym of the word cool. Due to "T9" text messaging. After numerous attempts to respond with the word cool, t9 always chooses book first. Resulting in a response such as "thats book" when meaning "thats cool". It sounds good so i started to adopt it in everyday speak, and it caught fire like a dry forest in california.
"did u see rutgers comeback to beat louisville."

"YEAH MAN, THAT GAME WAS BOOK"
by aTv November 17, 2006
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