vervain
英 ['vɜ:veɪn]
美 ['vɜveɪn]
- n. [植] 马鞭草；马鞭草属植物
英语词源
- vervain (n.)
- herbaceous plant much valued medicinally in Middle Ages, late 14c., from Old French verveine (13c.), from Latin verbena (see verbena).