DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   tuber
       n 1: a fleshy underground stem or root serving for reproductive
            and food storage
       2: type genus of the Tuberaceae: fungi whose fruiting bodies are
          typically truffles [syn: Tuber, genus Tuber]