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.
The noun STOOL has 4 senses: 1. a simple seat without a back or arms. 2. solid excretory product evacuated from the bowels. 3. (forestry) the stump of a tree that has been felled or headed for the production of saplings. 4. a plumbing fixture for defecation and urination. Familiarity information: STOOL used as a noun is uncommon.