/ Dictionary / Index B Boswash: Meaning and Definition of Find definitions for: Bos•wash Pronunciation: (bôs'wosh", -wôsh", bos'-), [key] — n. Informal. the heavily populated area extending from Boston to Washington and including New York City, Philadelphia, and Baltimore. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bosun bird Boswell Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language