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English definition of “rhubarb”

rhubarb

noun uk   /ˈruː.bɑːb/ us    /-bɑːrb/

rhubarb noun (FOOD)

[U] a plant that has long, sour-tasting red and green stems that can be cooked and eaten as a fruit: Have you ever eaten rhubarb crumble?

rhubarb noun (ARGUMENT)

[C] US old-fashioned slang a loud argument

rhubarb

exclamation uk   /ˈruː.bɑːb/ us    /-bɑːrb/
a word that is repeated many times in order to produce the sound of people talking when the meaning of the word is not important: We had to stand at the back of the stage saying "rhubarb, rhubarb" in the crowd scenes.
(Definition of rhubarb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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