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
