The Collaborative International Dictionary of English v.0.48:

Chocolate \Choc"o*late\, n. [Sp., fr. the Mexican name of the
   cacao. Cf. Cacao, Cocoa.]
   1. A paste or cake composed of the roasted seeds of the
      Theobroma Cacao ground and mixed with other ingredients,
      usually sugar, and cinnamon or vanilla.
      [1913 Webster]

   2. The beverage made by dissolving a portion of the paste or
      cake in boiling water or milk.
      [1913 Webster]

   Chocolate house, a house in which customers may be served
      with chocolate.

   Chocolate nut. See Cacao.
      [1913 Webster]

WordNet (r) 3.0 (2006):

chocolate
    n 1: a beverage made from cocoa powder and milk and sugar;
         usually drunk hot [syn: cocoa, chocolate, hot
         chocolate, drinking chocolate]
    2: a food made from roasted ground cacao beans
    3: a medium brown to dark-brown color [syn: chocolate,
       coffee, deep brown, umber, burnt umber]