/ Dictionary / Index B beam reach: Meaning and Definition of Find definitions for: beam' reach' Pronunciation: [key] — Naut. Naut. See under(def. 27). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. beam-power tube beam sea 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