The Collaborative International Dictionary of English v.0.48:

Cassino \Cas*si"no\, n. [It. casino a small house, a gaming
   house. See casino.]
   A game at cards, played by two or more persons, usually for
   twenty-one points.
   [1913 Webster]

   Great cassino, the ten of diamonds.

   Little cassino, the two of spades.
      [1913 Webster]

WordNet (r) 3.0 (2006):

cassino
    n 1: a card game in which cards face up on the table are taken
         with eligible cards in the hand [syn: casino, cassino]