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}.]

Source : WordNet®

Morchella esculenta
     n : an edible and choice morel with a globular to elongate head
         with an irregular pattern of pits and ridges [syn: {common
         morel}, {sponge mushroom}, {sponge morel}]