grass up


Also found in: Idioms.

grass up

vb
(tr, adverb) slang to inform on (someone), esp to the police
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
And if they only ate clover and grass up, Butter and milk I would never pass up.
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