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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

A friend is a treasure

A true friend is invaluable and precious.

trust someone with your life

to trust someone completely

Keep hope alive

To continue believing in a positive outcome.

to bring someone to justice

to capture and punish someone for a crime

lay all your cards on the table

to be open and honest about your intentions or plans

sift out

to remove unwanted parts from a mix