English Dictionary

stool pigeon

noun

(originally) A pigeon tied to a stool by a piece of twine, used as a decoy to entice free-flying birds to the ground to be shot or trapped. / (slang, obsolete) A decoy used in a crooked gambling game.

The police used a stool pigeon to gather information about the criminal organization.

意味（1）

(originally) A pigeon tied to a stool by a piece of twine, used as a decoy to entice free-flying birds to the ground to be shot or trapped.

意味（2）

(slang, obsolete) A decoy used in a crooked gambling game.

意味（3）

(slang) An informer to the authorities, especially one who gives up criminal associates.