01 n. The name of several large perennial herbs of the genus Rheum and order Polygonaceae.
-
1.
The name of several large perennial herbs of the genus Rheum and order Polygonaceae.(Bot.)
-
2.
The large and fleshy leafstalks of Rheum Rhaponticum and other species of the same genus. They are pleasantly acid, and are used in cookery. Called also pieplant. Also: pieplant
-
3.
The root of several species of Rheum, used much as a cathartic medicine.(Med.)