/ Dictionary / Index D Diamond Head: Meaning and Definition of Find definitions for: Dia'mond Head" Pronunciation: [key] a promontory on SE Oahu Island, in central Hawaii. 761 ft. (232 m) high. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diamond dust diamondiferous Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language