Simple Definition of stool pigeon
: 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
<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
Learn More about stool pigeon
Thesaurus: All synonyms and antonyms for "stool pigeon"
Seen and Heard
What made you want to look up stool pigeon? Please tell us where you read or heard it (including the quote, if possible).