#1 canary n. [fink, snitch, snitcher, stoolpigeon, stool pigeon, stoolie, sneak, sneaker] someone acting as an informer or decoy for the police. wn #2 canary s. [canary-yellow] having the color of a canary; of a light to moderate yellow. wn #3 canary n. a female singer. wn #4 canary n. [canary yellow] a moderate yellow with a greenish tinge. wn #5 canary n. [canary bird] any of several small Old World finches. wn