/ Dictionary / Index B bed board: Meaning and Definition of Find definitions for: bed' board" Pronunciation: [key] a thin, rigid board placed between a mattress and bedspring to give firm support. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bedazzle bed bolt Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language