/ Dictionary / Index B Betsiboka: Meaning and Definition of Find definitions for: Bet•si•bo•ka Pronunciation: (bet"sē-bō'ku, -b'-), [key] — n. a river in central Madagascar, flowing NW to the Mozambique Channel. ab. 200 mi. (320 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. betrothed Betsy Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language