/ Dictionary / Index G G.C.B.: Meaning and Definition of Find definitions for: G.C.B. Pronunciation: [key] Grand Cross of the Bath. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. g-cal GCC Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language