/ Dictionary / Index H high board: Meaning and Definition of Find definitions for: high' board" Pronunciation: [key] a diving board three meters above the water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: highboard (Thesaurus) high blower highborn Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language