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