Breadcrumb Home > Dictionary > Index G Cite G.B.: Meaning and Definition of Find definitions for: G.B. Pronunciation: [key] Great Britain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gb (Thesaurus) gazump Gbari TrendingHere are the facts and trivia that people are buzzing about. April 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress Noble Titles and Ranks in a Monarchy Keeping Your Brain Active in a COVID-19 World Quetzalcoatl: Aztec Myths and Myths About the Aztecs Related Content Daily Word Quiz: schadenfreude Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language