jet2

 
Pronunciation: /dʒɛt/

noun

[mass noun]
  • a hard black semi-precious variety of lignite, capable of being carved and highly polished: [as modifier]: jet beads
  • (also jet black) a glossy black colour: [as modifier]: her jet-black hair

Origin:

Middle English: from Old French jaiet, from Latin Gagates, from Greek gagatēs 'from Gagai', a town in Asia Minor