uropygium

noun
uro·​py·​gi·​um | \ ˌyu̇r-ə-ˈpī-jē-əm How to pronounce uropygium (audio) \

Definition of uropygium

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

First Known Use of uropygium

1771, in the meaning defined above

History and Etymology for uropygium

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

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The first known use of uropygium was in 1771

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