bitternut

[ bit-er-nuht ]
/ ˈbɪt ərˌnʌt /
|

noun

a hickory, Carya cordiformis, of the eastern and southern U.S., bearing a smooth, gray, bitter seed.

Origin of bitternut

An Americanism dating back to 1800–10; bitter + nut
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for bitternut

bitternut

/ (ˈbɪtəˌnʌt) /

noun

an E North American hickory tree, Carya cordiformis, with thin-shelled nuts and bitter kernels
the nut of this plant
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