feverfew (n.)youdaoicibaDictYouDict[feverfew 词源字典]
Old English feferfuge, from Late Latin febrifugia, from Latin febris "fever" + fugare "put to flight" (see febrifuge). So called for its medical usage. The modern English word probably is reborrowed from an Anglo-French source.[feverfew etymology, feverfew origin, 英语词源]