/ Dictionary / Index B bth: Meaning and Definition of Find definitions for: bth Pronunciation: [key] bathroom. B.Th. Pronunciation: [key] Bachelor of Theology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. B.T.E. btl. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language