stool pigeon

noun

Definition of stool pigeon

  1. 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. 2 :  a pigeon used as a decoy to draw others within a net

Examples of stool pigeon in a sentence

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

Origin and Etymology of stool pigeon

probably from the early practice of fastening the decoy bird to a stool


First Known Use: 1826


STOOL PIGEON Defined for English Language Learners

stool pigeon

noun

Definition of stool pigeon for English Language Learners

  • : a criminal who gives the police information about other criminals



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