/ Dictionary / Index B B.P.O.E.: Meaning and Definition of Find definitions for: B.P.O.E. Pronunciation: [key] Benevolent and Protective Order of Elks. See under(def. 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bpl. B power supply Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language