Source : Webster's Revised Unabridged Dictionary (1913)

Finochio \Fi*no"chi*o\ (?; 277), n. [It. finocchio fennel, LL.
   fenuclum. See {Fennel}.] (Bot.)
   An umbelliferous plant ({F[oe]niculum dulce}) having a
   somewhat tuberous stem; sweet fennel. The blanched stems are
   used in France and Italy as a culinary vegetable.

Source : WordNet®

Foeniculum dulce
     n : grown especially for its edible aromatic bulbous stem base
         [syn: {Florence fennel}, {Foeniculum vulgare dulce}]