uropygium: Meaning and Definition of

u•ro•pyg•i•um

Pronunciation: (yoor"u-pij'ē-um), [key]
— n. Ornith.
  1. the projecting terminal portion of a bird's body, from which the tail feathers spring.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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