From Longman Dictionary of Contemporary Englishjet-blackˌjet-ˈblack adjective CCvery dark black jet-black hair —jet black noun [uncountable]
Examples from the Corpus
jet-black• Now everything was jet-black and fiery red.• The eyes had become a jet-black bar that flamed.• She was attractive in a plump, slovenly way, with a mass of jet-black curls, dark eyes and brown skin.• jet-black eyebrows• His jet-black eyes stare out from hand-painted murals or photographs mounted in every shop, school and office in the country.• Tall and slender, with pale skin and jet-black hair, she was less outgoing than her older sister.• Her eyes wide and solicitous and framed by jet-black lashes I made thick and long by trimming the ends every few months.• In principle, the play should be more sinister and much funnier in its jet-black way than this version allows. 