groundnut
noun
ground·nut
ˈgrau̇n(d)-ˌnət
1
a
: any of several plants having edible tuberous roots
especially
: a North American leguminous vine (Apios americana) with pinnate leaves and clusters of brownish-purple fragrant flowers
b
: the root of a groundnut
2
chiefly British
: peanut
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Merriam-Webster unabridged
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