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