/ Dictionary / Index F flame tree: Meaning and Definition of Find definitions for: flame' tree" Pronunciation: [key] either of two trees, Brachychiton acerifolius or B. australis, native to Australia, having clusters of bright scarlet flowers. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flamethrower flaming Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language