/ Dictionary / Index S Sumbawa: Meaning and Definition of Find definitions for: Sum•ba•wa Pronunciation: (sm-bä'wä), [key] — n. one of the Lesser Sunda Islands, in Indonesia: destructive eruption in 1815 of Mt. Tambora. 5965 sq. mi. (15,449 sq. km). Dutch, Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sumba Sumer Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language