uropygium


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uropygium

(yo͝or′ə-pī′jē-əm, -pĭj′ē-)
n.
The posterior part of a bird's body, from which the tail feathers grow.

u′ro·py′gi·al (-əl) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

uropygium

the fleshy and bony swelling at the rear of a bird that supports the tail feathers.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005