Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. Slang A person acting as a decoy or as an informer, especially one who is a spy for the police.
- n. A pigeon used as a decoy.
Century Dictionary and Cyclopedia
- n. A pigeon fastened to a stool, and used as a decoy.
- n. Hence A person employed as a decoy: as, a stool-pigeon for a gambling-house: such a fellow is generally a “rook” who pretends to be a“pigeon.” See pigeon, 2, and rook, 3.
- n. One who looks over the hand of a card-player and signals its contents to a confederate.
Wiktionary
GNU Webster's 1913
- n. a pigeon used as a decoy to draw others within a net; hence, a person used as a decoy for others.
WordNet 3.0
- n. someone acting as an informer or decoy for the police
- n. a dummy pigeon used to decoy others
- n. someone acting as an informer or decoy for the police
Etymologies
- From the act of tying or even nailing a pigeon to a stool to act as a decoy for hunters. (Wiktionary)
- From the practice of tying decoy pigeons to a stool to attract other pigeons. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“Sammy Benavides said, “Is a stool pigeon a good man in your book,”
The Big Nowhere
Lists
These user-created lists contain the word ‘stool pigeon’.
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Americanism
American words
finest, fast food, acclimate, aluminum, alphabetize, airplane, affirmative action, arugula, backhoe, bangs, base board, bayou and 162 more...
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pigeons and doves
309 species of pigeon according to
Animal (DK),pigeons produce crop
milk.Thirty-two pigeons have been decorated with the Dickin Medal.
Colloquial responsibility; concern: that's h...Columbidae, squab, rock dove, feral rock pigeon, crop milk, dove, wood pigeon, pink pigeon, eurasian collared..., mourning dove, magnificent fruit..., New zealand pigeon and 131 more...
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•Open List: Flights of Fancy
Fictitious birds. Thanks to PossibleUnderscore for the idea! (Please add a brief description under "Comments" if the creature isn't well-known.)
phoenix, quetzalcoatl, thunderbird, roc, snipe, Roly-Poly Bird, ba, griffin, sphinx, Foghorn Leghorn, Heckle and Jeckle, firebird and 166 more...
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Swine
For more aporkalyptic fun, see madmouth's Everything's better with a pig in it.
For "references to the Dursleys in Wizard People, Dear Reader, Brad Neely's cosmos-shattering voiceover ...swine, pig, hog, boar, pork, pork bellies, hog cholera, swineherd, pigsty, swine flu, oink, pig in a blanket and 188 more...
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the first list
an immense, grandiloquent list that loads like a thousand years sentence in stone. new words are in the other lists.
ridiculous, brummagem, predicament, sanctimonious, vapid, eschew, admonish, auspicious, capitulation, enumerate, lachrymose, tenet and 1648 more...
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that's just beastly!
cat-o-nine-tails, snake in the grass, puppy love, white elephant, crocodile tears, monkey business, keep the wolf fro..., culture vulture, black sheep of th..., scapegoat, ugly duckling, swan song and 260 more...
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Special Beasts
I'm looking for compounds or phrases where the character of an animal is essential to the meaning, yet the term is usable in general conversation.
scapegoat, bull market, sacred cow, bear market, hangdog, cat o' nine tails, clothes horse, mousey, donkey drop, black sheep, horseplay, ducks and drakes and 94 more...
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Noah's Park
Hello, and Welcome™! Come and visit our most diverse land of our Animalesque™ adventures. Here at Noah's Park™ we have Virtually All You'd Ever Want To See™. An experience that is related to ani...
sheep's eyes, doe-eyed, cat-eyed, bug-eyed, cat's paw, black swan, leapfrog, menagerie, cold turkey, card shark, snail's pace, bull's eye and 362 more...
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Wirds of a Feather
Phrases and figures of speech in which birds are featured. Or feathers. Or such like.
a little bird tol..., to have an albatr..., birds of a feathe..., in the catbird seat, cold turkey, to cook one's goose, don't count your ..., to have one's duc..., to eat crow, a feather in one'..., for the birds, flip the bird and 122 more...
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Animalia Wordia
Words or short phrases with animal names in them. Since I already have a dedicated list for 'monkey' words I shall leave them out of this one for the moment.
paper tiger, pigeon-hearted, lion-hearted, sacred cow, chicken heart, fraidy cat, scaredy-cat, snake oil, can of worms, snake pit, rat's nest, stool pigeon and 114 more...
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Fun Phrases & Idioms
dust up, wreak havoc, the willies, cash cow, average joe, drama queen, fancy pants, houston we have a..., in your face, just deserts, kangaroo court, quality time and 78 more...
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The Pokey, the Big House, The Slammer
can, big house, slammer, clink, jail, pen, oubliette, the pokey, sisters, punk, cage, cooler and 28 more...
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Vocab
apoplectic, sapphic, inception, elephantine, precede, glean, prostrate, incarnation, tribunal, ordain, normative, liturgical and 20 more...
Tweets
Looking for tweets for stool pigeon.

seanahan Alright, here is what the article says, clarifying the confusing Wikipedia statement. They would stick a dead pigeon on a stool, which would make other birds less wary, since the birds figure if one bird thinks it's safe, it must be.
I never imagined this term meant something so archaic. Jun 30, 2007
slumry More here: http://www.phrases.org.uk/meanings/stool-pigeon.html regarding the origins of phrase. Jun 30, 2007
reesetee Neither does the fact that gazillions of passenger pigeons were slaughtered for food (and thus went extinct), but that happened too, sad to say.... :-\ Never heard that story though, seanahan. Jun 29, 2007
seanahan This appears to be a pigeon which is not a homing pigeon, but is released with homing pigeons to distract the enemy. Wikipedia says,
"The term "stool pigeon" was first coined when passenger pigeons were captured, had their eyelids sewn shut, and were tied to stools. The birds sitting on the stools would be used as live decoys so pigeon hunters would have an easier shot at their quarry"
but the whole stool thing doesn't make any sense. Jun 29, 2007