earthnut

noun

Definition of earthnut 

1 : any of various roots, tubers, or subterranean pods: such as

a : the tuber of a common southern European plant (Conopodium denudatum) of the family Umbelliferae having the flavor of roasted chestnuts

b : yellow nutsedge

c : peanut

d or less commonly earthnut pea : the root of the heath pea

2 : any plant producing earthnuts

3 : truffle

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First Known Use of earthnut

14th century, in the meaning defined at sense 1

History and Etymology for earthnut

Middle English erthenote, from Old English eorthnutu, from eorth- (from eorthe earth) + nutu, hnutu nut

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The first known use of earthnut was in the 14th century

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