/ Dictionary / Index B B.Arch.: Meaning and Definition of Find definitions for: B.Arch. Pronunciation: [key] Bachelor of Architecture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Barcelona chair barchan Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language