/ Dictionary / Index D diamondback: Meaning and Definition of Find definitions for: dia•mond•back Pronunciation: (dī'mund bak", dī'u-), [key] — adj. bearing diamond-shaped marks, designs, or configurations on the back. —n. See See See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diamondback (Thesaurus) diamond diamondback moth Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language