Source : Webster's Revised Unabridged Dictionary (1913)

Keno \Ke"no\, n. [F. quine five winning numbers, fr. L. quini
   five each, quinque five. See {Five}.]
   A gambling game, a variety of the game of lotto, played with
   balls or knobs, numbered, and cards also numbered. [U. S.]

Source : WordNet®

keno
     n : a game in which numbered balls are drawn at random and
         players cover the corresponding numbers on their cards
         [syn: {lotto}, {bingo}, {beano}]