American English

Definition of St. John's Wort noun from the Oxford Advanced American Dictionary

 

St. John's Wort

 noun
noun
NAmE//seɪnt ˈdʒɑnz ˌwərt//
 
, NAmE//seɪnt ˈdʒɑnzˌwɔrt//
 
[uncountable, countable]
 
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an herb with yellow flowers, used in medicines
See the Oxford Advanced Learner's Dictionary entry: St. John's Wort