uropygium

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noun uro·py·gi·um \ˌyu̇r-ə-ˈpī-jē-əm\

Definition of uropygium

  1. :  the fleshy and bony prominence at the posterior extremity of a bird's body that supports the tail feathers

Origin and Etymology of uropygium

New Latin, from Greek ouropygion, from ouro- 2ur- + pygē rump


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