Definition of orrisroot
: the fragrant rootstock of any of three European irises (Iris florentina, I. germanica, and I. pallida) used especially in perfumery
First Known Use of orrisroot
Medical Definition of orrisroot
: the fragrant rootstock of any of three European irises (Iris pallida, I. florentina, and I. germanica) used in pulverized form in perfumery and pharmacology—called also orris
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