Breadcrumb Home > Dictionary > Index B bor.: Meaning and Definition of Find definitions for: bor. Pronunciation: [key] borough. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. BOQ bora ✖ Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language