or·ris (ôrĭs, ŏr-)
1. Any of several species of iris having a fragrant rootstock, especially Iris pallida and cultivars of the hybrid species I. ×germanica.
2. The fragrant rootstock of an orris, used chiefly in perfumes. Also called orrisroot.
[Probably alteration of Middle English yreos, from Medieval Latin, alteration of Latin īris; see IRIS.]
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