earthnut
noun
°Any of various roots, tubers, or pods that grow underground.
°A tuber belonging to the species of Bunium flexuosum, Carum bulbocastanum, Conopodium denudatum, or Apios tuberosa.
synonyms: earth chestnut, goober, goober pea, groundnut more» , hawknut, monkey nut, peanut, pignut, truffle