/ Dictionary / Index S spiraea: Meaning and Definition of Find definitions for: spi•rae•a Pronunciation: (spī-rē'u), [key] — n. spirea. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spiraea (Thesaurus) spiracle spiral Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language