An idiot or a fool. Used to insult people during grime battle-raps / clashes.
Dizzee Racal in a clash with Wiley: I'm not a mook, ya nah. I don't know what you heard, but I'm not a mook.
by ragoflex October 22, 2007
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70's slang for "head".
I bust that fool in his mook!
by kehko November 26, 2010
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A mustache-filled kiss.
I'm just trying to avoid another mook.
by iris202 January 8, 2009
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getting on someone's case or insulting something for no apparent reason
dude, why you mookin' on rusted root?
by Not Miena August 7, 2005
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mook, something that is bad, sucks.

that shit is mook
i had a mook day
by phyliss February 26, 2005
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The sound a moose makes.
the moose said "mook" when it started to snow
by Alaska Joe Schmo December 3, 2008
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pete v is such a mook
by cmmnj December 30, 2009
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