/ Dictionary / Index S spirea: Meaning and Definition of Find definitions for: spi•re•a Pronunciation: (spī-rē'u), [key] — n. any of various plants or shrubs belonging to the genus Spiraea, of the rose family, having clusters of small, white or pink flowers, certain species of which are cultivated as ornamentals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spirea (Thesaurus) spire spired Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language