DuckCorp Dico

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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Tuber \Tu"ber\, n.[L., a hump. knob; probably akin to tumere to
      swell. Cf. Tumid.]
      1. (Bot.)
         (a) A fleshy, rounded stem or root, usually containing
             starchy matter, as the potato or arrowroot; a
             thickened root-stock. See Illust. of Tuberous.
         (b) A genus of fungi. See Truffle.
             [1913 Webster]
      2. (Anat.) A tuberosity; a tubercle.
         [1913 Webster]