any of a number of trees that produce very hard timber, in particular (材质坚硬的)铁木,尤指
a southern African tree of the olive family (Olea laurifolia, family Oleaceae) a North American tree related to the hornbeam (Ostrya virginiana, family Betulaceae) 一种南部非洲的桂叶木犀榄(拉丁名 Olea laurifolia,木犀科) 一种北美与鹅耳枥有亲缘关系的美洲铁木(拉丁名Ostrya virginiana,桦木科)