made by art; not natural or pathologic. 1  artificial respiration any method of forcing air into the lungs in a person who still has a pulse but whose breathing has stopped. Artificial respiration can be given with no equipment, so that it is an ideal emergency first aid procedure. 2  Indications.
stool pigeon - someone acting as an informer or decoy for the police. canary, fink, snitch, stoolie, stoolpigeon, sneaker, snitcher, sneak. betrayer, blabber, informer, squealer, rat - one who reveals confidential information in return for money.
Also found in: Dictionary, Thesaurus, Wikipedia. Related to pigeonnier: dovecote. A structure that houses doves or pigeons; often square, hexagonal, octagonal, or round in plan and one-and-a-half or two stories high; typically topped with a finial; once popular because the birds provided a tasty source of fresh meat.