Source : Webster's Revised Unabridged Dictionary (1913)

Morel \Mor"el\, n. [See {Moril}.] (Bot.)
   An edible fungus ({Morchella esculenta}), the upper part of
   which is covered with a reticulated and pitted hymenium. It
   is used as food, and for flavoring sauces. [Written also
   {moril}.]

Morel \Mor"el\, n. [See {Morelle}.] (Bot.)
   1. Nightshade; -- so called from its blackish purple berries.
      [Written also {morelle}.]

   2. A kind of cherry. See {Morello}.

   {Great morel}, the deadly nightshade.

   {Petty morel}, the black nightshade. See {Nightshade}.

Source : WordNet®

morel
     n : any of various edible mushrooms of the genus Morchella
         having a brownish spongelike cap