canary in the coal mine (English, noun)
expansion: canary in the coal mine (plural canaries in the coal mine or canaries in coal mines or canaries in the coal mines)
Senses:
glosses: Alternative form of canary in a coal mine.
tags: alt-of
alternative
Forms:
form: canaries in the coal mine
tags: plural
form: canaries in coal mines
tags: plural
form: canaries in the coal mines
tags: plural