/ Dictionary / Index S steam boiler: Meaning and Definition of Find definitions for: steam' boil"er Pronunciation: [key] a receptacle in which water is boiled to generate steam. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Steamboat Springs steam chest Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language