Source : Webster's Revised Unabridged Dictionary (1913)

Gamester \Game"ster\, n. [Game + -ster.]
   1. A merry, frolicsome person. [Obs.] --Shak.

   2. A person who plays at games; esp., one accustomed to play
      for a stake; a gambler; one skilled in games.

            When lenity and cruelty play for a kingdom, the
            gentlest gamester is the soonest winner. --Shak.

   3. A prostitute; a strumpet. [Obs.] --Shak.