/ Dictionary / Index R red heart: Meaning and Definition of Find definitions for: red' heart' Pronunciation: [key] a treelike Californian shrub, Ceanothus spinosus, of the buckthorn family, having pale blue or white flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. red-headed woodpecker red heat Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language