valerian
noun/vəˈlɪəriən/
/vəˈlɪriən/
[uncountable]- a drug obtained from the root of a plant with the same name, used to make people feel calmerWord Originlate Middle English: from Old French valeriane, from medieval Latin valeriana (herba), apparently the feminine of Valerianus ‘of Valerius’ (a personal name).
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valerian