miners' canary (English, noun)
expansion: miners' canary (plural miners' canaries)
Senses:
glosses: A caged bird kept caged in mines because its demise provided a warning of dangerous levels of toxic gases.
glosses: Any thing, especially an organism, whose demise or distress provides an early warning of danger.
tags: idiomatic
Forms:
form: miners' canaries
tags: plural
form: canary in a coal mine
tags: alternative
form: miner's canary
tags: alternative