/ Dictionary / Index B Bothnia: Meaning and Definition of Find definitions for: Both•ni•a Pronunciation: (both'nē-u), [key] an arm of the Baltic Sea, extending N between Sweden and Finland. ab. 400 mi. (645 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bothersome Bothwell 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