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A commonplace term for the drug Marijuana.
Randall: "You up for getting some croo this weekend?"

Pedro: "Yeah I can get some off Leemo tomorrow if you want"
by Justice Bringer September 14, 2009
A word used to indicate the presence of an awkward silence. An onomatopoeia of the chirping of crickets in the background (croo croo croo croo...)
Kanye West: "President Bush doesn't care about black people."


Chris Tucker (thinking): "CROO!"
by Cheezburga December 10, 2009
the activity of stage crew as to not be confused with rowing crew
Croo encourges sexism.
by ApplejaXX April 09, 2008