stool pigeon


stool pigeon

noun

: a criminal who gives the police information about other criminals

Full Definition of STOOL PIGEON

1
:  a person acting as a decoy or informer; especially :  a spy sent into a group to report (as to the police) on its activities
2
:  a pigeon used as a decoy to draw others within a net

Examples of STOOL PIGEON

  1. <the FBI finally got a break when one of the mob boss's top henchmen turned stool pigeon>

Origin of STOOL PIGEON

probably from the early practice of fastening the decoy bird to a stool
First Known Use: 1826

Rhymes with STOOL PIGEON

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