red gum
noun
1- an Australian gum tree with smooth bark and hard dark red timber赤桉。
1.1
- Genera Eucalyptus (and Angophora), family Myrtaceae: many species, in particular the widespread river red gum (E. camaldulensis).桉属, 桃金娘科：多种, 尤指分布广泛的 赤桉 （拉丁名E. camaldulensis）.
1.2
- mass noun astringent reddish kino gum obtained from some of these trees, used for medicinal purposes and for tanning赤桉树脂。