Definition of orchil in English:

orchil

noun

  • 1mass noun A red or violet dye obtained from certain lichens, used as a source of litmus, orcinol, and other pigments.

    • ‘He paints women with coloured earth, mud, carbon powder or orchil.’
  • 2A lichen with flattened fronds from which orchil is produced.

    Roccella (order Graphidiales) and other genera: several species, including the Mediterranean R. tinctoria, used for dyeing, and the Madagascan R. montagnei, used for litmus

Origin

Late 15th century: from Old French orcheil, related to Spanish urchilla; of uncertain origin.

Pronunciation

orchil

/ˈɔːtʃɪl/