—n. 1. any of several Old World finches of the genus Serinus, esp. S. canaria(common canary), native to the Canary Islands and often kept as a pet, in the wild being greenish with brown streaks above and yellow below and in domesticated varieties usually bright yellow or pale yellow.
2. Also calledcanary yellow. a light, clear yellow color.
3. Slang.informer (def. 1).
4. Slang.a female singer, esp. with a dance band.
5. a sweet white wine of the Canary Islands, resembling sherry.
6. a yellow diamond.