/ Dictionary / Index B Britain: Meaning and Definition of Find definitions for: Brit•ain Pronunciation: (brit'n), [key] — n. See Britannia (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: britain (Thesaurus) brit Britannia Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language