IdiomAnimalsEnglish

fly the coop

Meaning: To escape.

Example: “The last of our kids flew the coop last fall, and the house feels empty.”

Equivalents in other languages

Origin: American slang from around 1900. A coop is a cage for chickens, and "coop" was also slang for a jail, so a prisoner who escaped had flown the coop like a loose hen.

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