earthnut Meaning, Definition & Usage

  1. noun any of various highly prized edible subterranean fungi of the genus Tuber; grow naturally in southwestern Europe
    earth-ball; truffle.
  2. noun a common European plant having edible tubers with the flavor of roasted chestnuts
    Conopodium denudatum.
  3. noun pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms
    goober; peanut; monkey nut; groundnut; goober pea.
  4. noun edible subterranean fungus of the genus Tuber
    truffle.

WordNet

Earth"nut` noun
Definitions
  1. (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.

Webster 1913