butternut

[ buht-er-nuht ]
/ ˈbʌt ərˌnʌt /

noun

Also called white walnut. the edible oily nut of an American tree, Juglans cinerea, of the walnut family.
the tree itself.
the light-brown wood of this tree, used for making furniture.
the light-brown color resulting from a dye made from this tree.
U.S. History. a Confederate soldier or partisan, especially one whose uniform was dyed with an extract from this tree.

Origin of butternut

An Americanism dating back to 1735–45; so called from the nut's oiliness
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for butternut

butternut

/ (ˈbʌtəˌnʌt) /

noun

a walnut tree, Juglans cinerea of E North AmericaCompare black walnut
the oily edible egg-shaped nut of this tree
the hard brownish-grey wood of this tree
the bark of this tree or an extract from it, formerly used as a laxative
a brownish colour or dye
NZ short for butternut pumpkin
Also called (for senses 1–4): white walnut
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