American chestnut

noun

Definition of American chestnut

: chestnut sense 1b(1) The new fungus does not harm the trees, so it now seems possible that the American chestnut, which once accounted for three out of every four trees in the Appalachians, will rise again. — John P. Wiley, Jr., Smithsonian, August 1986

First Known Use of American chestnut

1785, in the meaning defined above

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