valerian

noun4

1. •
   A hardy perennial flowering plant, Valeriana officinalis, with heads of sweetly scented pink or white flowers.

   • In the event of anyone wishing to invoke the very Prince of Spirits, the following ingredients were prescribed to be burnt - Juice of Hypericon, Saffron, Artemisia, and the root of Valerian. — 1936
2. •
   The root of Valeriana officinalis, used in herbal medicine.
3. •
   An extract of the dried roots of the Valeriana officinalis used in herbal medicine as a sedative.
4. •
   More generally, any plant of the genus Valeriana.