See under hornbeam.
Origin of American hornbeam
An Americanism dating back to 1775–85
any North American shrub or tree belonging to the genus Carpinus, of the birch family, yielding a hard, heavy wood, as C. caroliniana (American hornbeam).
Origin of hornbeam
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any tree of the betulaceous genus Carpinus, such as C. betulus of Europe and Asia, having smooth grey bark and hard white wood
the wood of any of these trees
Brit equivalent: ironwood
Word Origin for hornbeam
C14: from horn + beam, referring to its tough wood
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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