/ Dictionary / Index G guideboard: Meaning and Definition of Find definitions for: guide•board Pronunciation: (gīd'bôrd", -bōrd"), [key] — n. a large board or sign, usually mounted on a post, giving directions to travelers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. guide guidebook Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language