/ Dictionary / Index P Plymouth Brethren: Meaning and Definition of Find definitions for: Plym'outh Breth'ren Pronunciation: [key] a loosely organized body of Christians founded in Plymouth, England, about 1830, having no ordained ministry, no formal creed or ritual, and accepting the Bible as the only guide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Plymouth Plymouth Colony Related Content Daily Word Quiz: sylvan Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language