Or·ris n.  Bot. A plant of the genus Iris (Iris Florentina); a kind of flower-de-luce.  Its rootstock has an odor resembling that of violets.
  Orris pea Med., an issue pea made from orris root.
  Orris root, the fragrant rootstock of the orris.
  Iris florentina
       n : German iris having large white flowers with lavender-tinged
           falls and a fragrant rhizome [syn: Florentine iris, orris,
            Iris germanica florentina]