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canary in the coal mine

Idiom Environment

Meaning

an early warning of potential danger

Example Sentences

"Melting glaciers are the canary in the coal mine for climate change."

Related Expressions

hang on

to wait for a short time

tell tales

to gossip or reveal secrets, often to get someone in trouble

put one's cards on the table

to be honest and open about one’s intentions

brand ambassador

a person who promotes a brand through personal influence

pull it off

to succeed in doing something difficult

take someone under your wing

to take responsibility for someone and help them learn