/ Dictionary / Index F fire-tube boiler: Meaning and Definition of Find definitions for: fire'-tube boil"er Pronunciation: (fīr'tb", -tyb"), [key] any boiler for generating steam by passing hot gases and other combustible products through tubesimmersed in water to a chimney or uptake. Cf. water-tube boiler. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fire truck fire wall Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language