Webster's Revised Unabridged Dictionary · 1913

Orris

Orris , noun

[Probably corrupted from Italian ireos iris. See Iris.]

(Botany) A plant of the genus Iris (Iris Florentina); a kind of flower-de-luce. Its rootstock has an odor resembling that of violets.
Collocations (2)
Orris pea (Medicine) , an issue pea made from orris root.
Orris root , the fragrant rootstock of the orris.

Orris , noun

[Contr. from orfrays, or from arras.]

1.
A sort of gold or silver lace. — Johnson
2.
A peculiar 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.