jew's-ear

from The Century Dictionary.

• noun A fungus, Hirneola Auricula-Judæ, bearing some resemblance to the human ear.
• noun Any one of several fungi of the genus Peziza.
• noun The tomato.

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

• noun (Bot.) A widely distributed species of edible fungus (Auricularia auricula-judae, formerly Hirneola Auricula-Judæ, or Hirneola Auricula), bearing some resemblance to the human ear and growing on decaying wood.

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

• noun widely distributed edible fungus shaped like a human ear and growing on decaying wood