a small yellow bird with a beautiful song, often kept in a cage as a pet 金丝雀 Oxford Collocations DictionaryCanary is used before these nouns:- yellow
Word Originlate 16th cent.: from French canari, from Spanish canario ‘canary’ or ‘person from the Canary Islands’.
Idioms
a canary in a/the coal mine
something that gives you an early warning of danger 金丝雀：可以给您早期危险警告的东西 Among the species at risk is the silvery minnow, the river's equivalent of a canary in a coal mine. 处于危险中的物种包括银色的小鱼，这条河相当于煤矿里的金丝雀。
like the cat that got/ate/swallowed the canary (US English)
(British English like a cat that’s got the cream)
very pleased with yourself 扬扬得意；踌躇满志 She looked like a cat that’s swallowed the canary. She was almost purring with pleasure. 她看起来像一只吞下金丝雀的猫。她高兴得几乎发出咕噜声。