/ Dictionary / Index U uropygium: Meaning and Definition of Find definitions for: u•ro•pyg•i•um Pronunciation: (yoor"u-pij'ē-um), [key] — n. Ornith. 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. See also: uropygium (Thesaurus) uropygial gland uroscopy Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language