名詞 ironwood:

1. handsome East Indian evergreen tree often planted as an ornamental for its fragrant white flowers that yield a perfume; source of very heavy hardwood used for railroad ties
   同義詞：rose chestnut, ironwood tree, Mesua ferrea
2. exceptionally tough or hard wood of any of a number of ironwood trees
3. a small slow-growing deciduous tree of northern Iran having a low domed shape
   同義詞：iron tree, iron-tree, ironwood tree
4. medium-sized hop hornbeam of eastern North America
   同義詞：Eastern hop hornbeam, ironwood tree, Ostrya virginiana

i.ron.wood

n.（名詞）
Any of numerous trees, such as the hornbeam and the hop hornbeam, that have very hard wood.
鐵木：鵝耳櫪和鐵木等許多樹的任一種，木質(zhì)堅(jiān)硬
The wood of any of these trees.
鐵木：這些樹中任一種的木材