Definition of "kopi"

kopi

noun
uncountable
1. (Australia) A variety of gypsum found in southern Australia, sometimes containing opal, and traditionally used by Indigenous Australian in powdered form as body ornamentation for mourning ceremonies.
  Quotations
  "In these parts you find kopi, gypsum I think you call it, and you see it in layers exposed on the sides of certain hills."
  2010, Monte Dwyer, Red in the Centre: Through a Crooked Lens, Monyer Pty Ltd, page 104
  They were made by taking a cast of woven cord, and covered in kopi, a white gypsum clay.
  2018, Bruce Pascoe, Dark Emu, Scribe, published 2020, page 152