- coop (n.)
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- "small cage for poultry," mid-14c., from Old English cype, cypa "basket, cask," akin to Middle Dutch kupe, Swedish kupa, and all probably from Latin cupa "tub, cask," from PIE *keup- "hollow mound" (see cup (n.)).
- coop (v.)
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- 1560s, from coop (n.). Related: Cooped; cooping.