morel

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various edible mushrooms of the genus Morchella, characterized by a cap with irregular pits and ridges.

from The Century Dictionary.

• noun An edible mushroom; specifically, Morchella esculenta, which grows abundantly in Europe, particularly in England, as well as in many parts of the United States.
• Dark-colored; blackish.
• noun A dark-colored horse; hence, any horse.
• noun A kind of cherry. See morello.
• noun Garden nightshade, Solanum nigrum. See nightshade. Also morelle.

from the GNU version of the Collaborative International Dictionary of English.

• noun (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.
• noun (Bot.) Nightshade; -- so called from its blackish purple berries.
• noun A kind of cherry. See Morello.
• noun the deadly nightshade.
• noun the black nightshade. See Nightshade.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of several edible mushrooms (fungi) in the genus Morchella, especially the common morel or yellow morel, Morchella esculenta, the upper part of which is covered with a reticulated and pitted hymenium.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of various edible mushrooms of the genus Morchella having a brownish spongelike cap