valerian Definition in the Cambridge English Dictionary
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Definition of “valerian” - English Dictionary

Definition of "valerian" - British English Dictionary

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valeriannoun [U]

uk   us   /vəˈlɪə.ri.ən/ specialized
a ​plant with ​smallwhite or ​pinkflowers and a ​root that is used in ​medicines, ​especially as a sedative (= ​drug to ​calm you or make you ​sleep)
(Definition of valerian from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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