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English idiom

canary in the coal mine

Register · Neutral CEFR C1
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Example

“Roll the feature out to 5% of users first — that's our canary in the coal mine.”

Dictionary details

Alternate forms

Component words

Expressions connected by reviewed component words or topic tags.

Source methodology

Meanings, register, CEFR, and examples come from the reviewed dictionary record. Expression notes may describe a reviewed present-day word picture or a background note; they are not presented as verified etymology.

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