Source : WordNet®

false truffle
     n 1: any of various fungi of the family Rhizopogonaceae having
          subterranean fruiting bodies similar to the truffle
     2: any of various fungi of the genus Scleroderma having
        hard-skinned subterranean fruiting bodies resembling
        truffles [syn: {earthball}, {puffball}, {hard-skinned
        puffball}]