Pronunciation: (vu-lēr'ē-un),[key] —n. 1. any plant of the genus Valeriana, as the common valerian V. officinalis, having small, fragrant flowers of white, lavender, or pink and a root that is used medicinally.
2. a drug consisting of or made from the root, formerly used as a nerve sedative and antispasmodic.
Pronunciation: (vu-lēr'ē-un),[key] —n. (Publius Licinius Valerianus), dieda.d.c260, Roman emperor 253–60.