(n) plants having long green or reddish acidic leafstalks growing in basal clumps; stems (and only the stems) are edible when cooked; leaves are poisonous, Syn.rhubarb plant
n. [ F. rhubarbe, OF. rubarbe, rheubarbe, reubarbare, reobarbe, LL. rheubarbarum for rheum barbarum, Gr. &unr_;&unr_;&unr_; (and &unr_;&unr_;) rhubarb, from the river Rha (the Volga) on whose banks it grew. Originally, therefore, it was the barbarian plant from the Rha. Cf. Barbarous, Rhaponticine. ] 1. (Bot.) The name of several large perennial herbs of the genus Rheum and order Polygonaceae. [ 1913 Webster ]
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. [ 1913 Webster ]
3. (Med.) The root of several species of Rheum, used much as a cathartic medicine. [ 1913 Webster ]
Monk's rhubarb. (Bot.) See under Monk. -- Turkey rhubarb (Med.), the roots of Rheum Emodi. [ 1913 Webster ]
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