fever tree
noun
1- any of a number of trees which are believed to either cause or cure fever, in particular（据信能引起或治愈热病的）蓝桉（树）, 疟疾树, 尤指：
1.1
- a North American tree used in the treatment of malaria during the civil war (Pinckneya pubens, family Rubiaceae).（美国南北战争中用于治疗疟疾的）金鸡纳, 短毛苦疟树（拉丁名Pinckneya pubens,茜草科）。
1.2
- a southern African tree which was formerly believed to cause malaria (Acacia xanthophloea, family Leguminosae).（从前据信能引起疟疾的）黄木金合欢（拉丁名Acacia xanthophloea,豆科）。