valerian
/vəˈlɪərɪən/noun
1- a Eurasian plant which typically bears clusters of small pink or white flowers缬草。
1.1
- Family Valerianaceae: several species, in particular common valerian (Valeriana officinalis), a valued medicinal herb, and the Mediterranean red valerian (Centranthus ruber), grown for its spurred flowers which attract butterflies.败酱科：数种, 尤指名贵药材的缬草（拉丁名Valerina officinalis）和产于地中海地区的红缬草（拉丁名Centranthus ruber）, 为其吸引蝴蝶的团状花而种植。
1.2
- mass noun a drug obtained from the root of common valerian, used as a stimulant and antispasmodic缬草根（用作兴奋剂和镇痉剂）。
词源
late Middle English: from Old French valeriane, from medieval Latin valeriana （herba）, apparently the feminine of Valerianus 'of Valerius' (a personal name).