GNU Collaborative International Dictionary of English

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1.       
   Rhubarb , n. [F. rhubarbe, OF. rubarbe, rheubarbe, reubarbare, reobarbe, LL. rheubarbarum for rheum barbarum, Gr.  (and ) 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.]
    (Bot.) The name of several large perennial herbs of the genus Rheum and order Polygonaceae.
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   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.
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   (Med.) The root of several species of Rheum, used much as a cathartic medicine.
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   Monk's rhubarb. (Bot.) See under Monk. -- Turkey rhubarb (Med.), the roots of Rheum Emodi.
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