earthnut n 1: any of various highly prized edible subterranean fungi of the genus Tuber; grow naturally in southwestern Europe [syn: {truffle}, {earthnut}, {earth-ball}] 2: a common European plant having edible tubers with the flavor of roasted chestnuts [syn: {earthnut}, {Conopodium denudatum}] 3: pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms [syn: {peanut}, {earthnut}, {goober}, {goober pea}, {groundnut}, {monkey nut}] 4: edible subterranean fungus of the genus Tuber [syn: {truffle}, {earthnut}]
Groundnut \Ground"nut`\ (ground"n[u^]t`), n. (Bot.) (a) The fruit of the {Arachis hypog[ae]a} (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}. [1913 Webster]
Peanut \Pea"nut\ (p[=e]"n[u^]t), n. (Bot.) The fruit of a trailing leguminous plant ({Arachis hypog[ae]a}); also, the plant itself, which is widely cultivated for its fruit. [1913 Webster] Note: The fruit is a hard pod, usually containing two or three seeds, sometimes but one, which ripen beneath the soil. Called also {earthnut}, {groundnut}, and {goober}. [1913 Webster]
Earthnut \Earth"nut`\, n. (Bot.) A name given to various roots, tubers, or pods grown under or on the ground; as to: (a) The esculent tubers of the umbelliferous plants {Bunium flexuosum} and {Carum Bulbocastanum}. (b) The peanut. See {Peanut}. [1913 Webster]