/ Dictionary / Index Y yarrow: Meaning and Definition of Find definitions for: yar•row Pronunciation: (yar'ō), [key] — n. a composite plant, Achillea millefolium, of Eurasia, having fernlike leaves and flat-topped clusters of whitish flowers, naturalized in North America. any of various other plants of the genus Achillea, some having yellow flowers. Yar•row Pronunciation: (yar'ō), [key] — n. a river in SE Scotland, flowing into the Tweed. 14 mi. (23 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: yarrow (Thesaurus) yarraman yashmak Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language