earth-ball
       n : any of various highly prized edible subterranean fungi of
           the genus Tuber; grow naturally in southwestern Europe
           [syn: truffle, earthnut]
  earthball
       n : any of various fungi of the genus Scleroderma having
           hard-skinned subterranean fruiting bodies resembling
           truffles [syn: false truffle, puffball, hard-skinned
           puffball]