Truf"fle [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 (T. aestivum) are much esteemed as articles of food.
Truffle worm Zool., the larva of a fly of the genus Leiodes, injurious to truffles.
<-- Truffle pig, a pig used for finding truffles. When trained, certain pigs have a peculiar ability to smell truffles which lie underground, making them useful for searching out hidden truffles. -->
© Webster 1913.