supergrass

/ (ˈsuːpəˌɡrɑːs) /

noun

an informer whose information implicates a large number of people in terrorist activities or other major crimes

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A bet is synonymous with a wager, but what does it mean in New York?
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

Example sentences from the Web for supergrass