English version

stoolpigeon

From Longman Dictionary of Contemporary English
Related topics: Crime
stoolpigeonstool‧pi‧geon /ˈstuːlˌpɪdʒɪn/ noun [countable] American English informal 🔊 🔊 SCCTELLsomeone, especially a criminal, who helps the police to catch another criminal, usually by giving them information syn informer
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