/ Dictionary / Index B boisterous: Meaning and Definition of Find definitions for: bois•ter•ous Pronunciation: (boi'stur-us, -strus), [key] — adj. rough and noisy; noisily jolly or rowdy; clamorous; unrestrained: the sound of boisterous laughter. (of waves, weather, wind, etc.) rough and stormy. rough and massive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: boisterous (Thesaurus) Bois-le-Duc boîte Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language