A grain yielded by a hardy cereal grass (Secale cereale), closely allied to wheat; also, the plant itself. Rye constitutes a large portion of the breadstuff used by man.
A disease in a hawk. Ainsworth. Rye grass, Italian rye grass, (Bot.) See under Grass. See also Ray grass, and Darnel. -- Wild rye (Bot.), any plant of the genus Elymus, tall grasses with much the appearance of rye.
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