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A shortened more lazy version of the word "cool". Used when it takes too much effort to pronounce the "l".
Aw, fo real? That's coo.
by Sylvia April 27, 2004
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1. Coo (Verb) - A complete state of relaxation and tranquility often aided by the use of marijuana.

2. Coo(ing)(Verb) - to be in the state of "coo"

3. Coo(ed) (Verb) - When coo is broken by inconsiderate fucks, due to the lack of understanding and appreciation by "non-cooers"
1. "Rahh lecture was long, man needs to coo."

2. "Man cant stop cooing, Jah bless"

3. "I'm all cooed out" (physically impossible)
by JakeKitch January 27, 2011
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Coo is another shortened way of saying killer cool. Cartman of south park also uses it.
This site is coo, real coo
by don February 11, 2004
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The sound that some of the biggest "smaller" birds make, better known as pigeons. Usually hanging around parks and within downtown areas of large cities, these pigeons make a characteristic "cooing" sound.
Me: Look over there! Pigeons!
Pigeon: Cooo.....Coo....
by Mike Rotch March 24, 2005
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1: An extremely sexist term against a woman similar to whore but worse.
2: A very wet vagina.
She slapped me in the face after I called her a fucking coos.

All last year you guys where trying to sniff her coos.
by Roger Doger August 17, 2007
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Shortened or slang for copter which is used as a slang for a vagina or pussy.
That fee had an amazing coo!
by Jake Pounder February 05, 2019
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