Gamble away - means to lose. One gambles away when the bet is unsuccessful and loses. It leads to a loss of game balance.
Gambler is a person who prefers to grow excited and to get the adrenaline rush during gambling for real money. In some sources the gambler is the high-class poker player.
Gambling is a game of fortune and chance (usually it is a money or other material values play), the result of which depends on the luck rather than the skills of the player.