eucalyptus [ˌjuːkəˈlɪptəs] (亦作 eucalypt) (pl. eucalyptuses 或 eucalypti -tʌɪ)
a fast-growing evergreen Australasian tree that has been widely introduced elsewhere. It is valued for its timber, oil, gum, resin, and as an ornamental tree 桉树。 亦称 gum, gum tree
Genus Eucalyptus, family Myrtaceae: numerous species 桉属,桃金娘科:众多种 ■(亦作 eucalyptus oil)[mass noun]the oil from eucalyptus leaves, chiefly used for its medicinal properties 桉(树)油,桉叶油
语源
modern Latin, from Greek eu 'well' + kaluptos 'covered' (from kaluptein 'to cover'), because the unopened flower is protected by a cap