truffle Meaning, Definition & Usage

  1. noun any of various highly prized edible subterranean fungi of the genus Tuber; grow naturally in southwestern Europe
    earth-ball; earthnut.
  2. noun edible subterranean fungus of the genus Tuber
    earthnut.
  3. noun creamy chocolate candy
    chocolate truffle.

WordNet

Truf"fle noun
Etymology
OF. trufle, F. truffe; akin to Sp. trufa, tartufo; of uncertain origin; perhaps from L. tuber a tumor, knob, truffle. Cf. Tuber, Trifle.
Definitions
  1. Any one of several kinds of roundish, subterranean fungi, usually of a blackish color. The French truffle (Tuber melanosporum) and the English truffle (T. æstivum) are much esteemed as articles of food.

Webster 1913