Real Dictionary

canary
countable noun: Canaries are small yellow birds which sing beautifully and are often kept as pets.

canary in American English
a small, yellow finch (Serinus canaria) native to the Canary Islands, Madeira, and the Azores
adjective: having the color canary
noun: 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 brigh

canary in British English
noun: a small finch, Serinus canaria, of the Canary Islands and Azores: a popular cagebird noted for its singing. Wild canaries are streaked yellow and brown, but most domestic breeds are pure yellow