Definition of rhubarb noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈruːbɑːb//
    ; NAmE NAmE//ˈruːbɑːrb//
    [uncountable] Fruit
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  1. 1 the thick red stems of a garden plant, also called rhubarb, that are cooked and eaten as a fruit rhubarb pie See related entries: Fruit
  2. 2a word that a group of actors repeat on stage to give the impression of a lot of people talking at the same time
  3. Word Originlate Middle English: from Old French reubarbe, from a shortening of medieval Latin rheubarbarum, alteration (by association with rheum ‘rhubarb’) of rhabarbarum ‘foreign rhubarb’, from Greek rha (also meaning ‘rhubarb’) + barbaros ‘foreign’.
See the Oxford Advanced American Dictionary entry: rhubarb