[1] : The Collaborative International Dictionary of English v.0.48

truffle \truf"fle\ ?; 277, n. of. trufle, f. truffe; akin to
   sp. trufa, tartufo; of uncertain origin; perhaps from l.
   tuber a tumor, knob, truffle. cf. tuber, trifle.
   any one of several kinds of roundish, subterranean fungi,
   usually of a blackish color. the french truffle tuber
   melanosporum and the english truffle tuber aestivum are
   much esteemed as articles of food.
   1913 webster

   truffle worm zool., the larva of a fly of the genus
      leiodes, injurious to truffles.
      1913 webster
see also:
tuber trifle tuber melanosporum tuber aestivum truffle worm leiodes 

Tuber >> T Words
Tuber, definition of term: Tuber
tuber_pag1.html

Tuber Melanospo >> T Words
Tuber Melanospo, definition of term: Tuber Melanospo
tuber+melanospo_pag1.html