St John’s Wort
noun /snt ˌdʒɒnz ˈwɜːt/
/seɪnt ˌdʒɑːnz ˈwɜːrt/
[uncountable, countable]- a herb with yellow flowers, used in medicines
金丝桃,圣约翰草(可入药) 词源so named because some species come into flower near the feast day of St John the Baptist (24 June).