orris

noun4

1. •
   Any of several irises that have a fragrant root, especially Iris × germanica.
2. •
   The fragrant root of such an iris.

   • Drop twelve drops of genuine oil of rhodium on a lump of loaf-sugar ; grind this wel in a glass mortar, and mix it thoroughly with three pounds of orris powder. — 1826
3. •
   (historical) A type of gold or silver coloured lace.
4. •
   (historical) A pattern in which gold lace or silver lace is worked, especially one in which the edges are ornamented with conical figures placed at equal distances, with spots between them.