RHUBARB

n. any of several varieties of edible plant from the genus Rheum (used as a food and medication); argument, squabble (Slang)

interj. nonsense! no way!

For other uses see Rhubarb (disambiguation) Rhubarb is a perennial plant that grows from thick short rhizomes, comprising the genus Rheum. This genus is in the family Polygonaceae, along with dock, sorrel, knotweeds, knotgrasses and buckwheat. The large, somewhat triangular leaf blades are elevated on long, fleshy petioles. The flowers are small, greenish-white, and borne in large compound leafy inflorescences.
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Noun
1. long pinkish sour leafstalks usually eaten cooked and sweetened
(synonym) pieplant
(hypernym) vegetable, veggie
2. plants having long green or reddish acidic leafstalks growing in basal clumps; stems (and only the stems) are edible when cooked; leaves are poisonous
(synonym) rhubarb plant
(hypernym) herb, herbaceous plant
(hyponym) Himalayan rhubarb, Indian rhubarb, red-veined pie plant, Rheum australe, Rheum emodi
(member-holonym) Rheum, genus Rheum

(n.)
The root of several species of Rheum, used much as a cathartic medicine.
  

(n.)
The name of several large perennial herbs of the genus Rheum and order Polygonaceae.
  

(n.)
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.
  

Scientific Name: Rheum palmatum or Scientific Name: Rheum officinale. The root of this plant has been used in some cultures to treat certain medical problems. It may have anti-inflammatory and anticancer effects. Also called da-huang, Chinese rhubarb, Indian rhubarb, and Turkish rhubarb.