Definify.com
Webster 1913 Edition
Groundnut
Ground′nutˊ
(ground′nŭtˊ)
, Noun.
(Bot.)
(a)
The fruit of the
Arachis hypogæa
(native country uncertain); the peanut; the earthnut. (b)
A leguminous, twining plant (
Apios tuberosa
), producing clusters of dark purple flowers and having a root tuberous and pleasant to the taste. (c)
The dwarf ginseng (
Aralia trifolia
). [U. S.]
Gray.
(d)
A European plant of the genus
Bunium
(B. flexuosum
), having an edible root of a globular shape and sweet, aromatic taste; – called also earthnut
, earth chestnut
, hawknut
, and pignut
.