/ Dictionary / Index J jet-black: Meaning and Definition of Find definitions for: jet-black Pronunciation: ( jet'blak'), [key] — adj. deep-black: jet-black hair. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jet-black (Thesaurus) jetbead jet boat Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language