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]