valerian

n. Eurasian plant with white or pink flowers that has healing powers, allheal; sedative drug derived from the dried roots of the valerian plant

Valerian may mean:Valerian (herb), a medicinal plantValerian I, Roman emperor 253-260Valerian II, son of Gallienus (d. 258)St. Valerian, bishop of Abbenza (d. 457)St. Valerian, husband of Saint CeciliaValérian and Laureline, French comics charactersValerian (child-martyr), saint of the Eastern Orthodox ChurchValerian, a pseudonym used by Gary Numan 
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Valérian and Laureline (French: Valérian et Laureline), also known as Valérian: Spatio-Temporal Agent (French: Valérian: Agent Spatio-Temporel), is a French comic book science fiction series created by writer Pierre Christin and artist Jean-Claude Mézières. It belongs to the rich family of Franco-Belgian comics.
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Noun
1. a plant of the genus Valeriana having lobed or dissected leaves and cymose white or ink flowers
(hypernym) flower
(hyponym) common valerian, garden heliotrope, Valeriana officinalis
(member-holonym) Valeriana, genus Valeriana

(n.)
Any plant of the genus Valeriana. The root of the officinal valerian (V. officinalis) has a strong smell, and is much used in medicine as an antispasmodic.
  

Scientific name: Valeriana officinalis. A plant whose roots are used as a sedative and to treat certain medical conditions. It is being studied as a way to improve sleep in cancer patients undergoing treatment. Also called garden valerian, Indian valerian, Pacific valerian, Mexican valerian, garden heliotrope, and Valerianae radix.