definitions

grass up

verb

(tr, adverb) slang to inform on (someone), esp to the police

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Nearby words

grass snipe, grass sorghum, grass sponge, grass style, grass tree, grass up, grass widow, grass widower, grass, günter, grass-green, grass-of-parnassus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012