/ Dictionary / Index B birch beer: Meaning and Definition of Find definitions for: birch' beer" Pronunciation: [key] a carbonated or fermented drink containing an extract from the bark of the birch tree. Cf. root beer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. birch birchen Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language