hornbeam
/ˈhɔːnbiːm/noun
1- a deciduous tree of north temperate regions, with oval serrated leaves, inconspicuous drooping flowers, and tough winged nuts. It yields hard pale timber.鹅耳枥。
1.1
- Genus Carpinus, family Betulaceae: several species, including the common Eurasian C. betulus, with a silvery-grey bark, and the American hornbeam(C. caroliniana).鹅耳枥属, 桦木科：数种, 包括常见的有银灰色树皮的欧亚大陆的欧洲鹅耳枥（拉丁名 C. betulus）和美洲鹅耳枥（拉丁名C. caroliniana）。
词源
late Middle English: so named because of the tree's hard, close-grained wood.