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.
He must decide whether to assume the young man is a stool pigeon or not -- effectively whether he must kill him, lest he foil the escape, or invite him to escape with him. Forbidden insults have included coward, guttersnipe, hooligan, rat, stool pigeon, swine, and traitor.