/ Dictionary / Index W wallboard: Meaning and Definition of Find definitions for: wall•board Pronunciation: (wôl'bôrd", -bōrd"), [key] — n. material manufactured in large sheets for use in making or covering walls, ceilings, etc., as a substitute for wooden boards or plaster. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: wallboard (Thesaurus) Walla Walla wall box Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language