noun (n)

• any of various highly prized edible subterranean fungi of the genus Tuber; grow naturally in southwestern Europe(noun.plant)

  Synonym:
  earth-ball, truffle
  

  source: wordnet30
• a common European plant having edible tubers with the flavor of roasted chestnuts(noun.plant)

  Synonym:
  conopodium denudatum
  

  source: wordnet30
• pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms(noun.food)

  Synonym:
  goober, goober pea, groundnut, monkey nut, peanut
  

  source: wordnet30
• edible subterranean fungus of the genus Tuber(noun.food)

  Synonym:
  truffle
  

  source: wordnet30
• A name given to various roots, tubers, or pods grown under or on the ground(noun)

  source: webster1913