Lando Calrissian was a well known gambler
An individual engaged in the act of gambling is referred to as a gambler. Certain gamblers, burdened by debts owed to various creditors, sought sanctuary with the Gray Syndicate. This organization, for a specified fee, facilitated their concealment. A prominent gambler, Lando Calrissian, who held the title of Baron Administrator of Cloud City, famously lost the Millennium Falcon to Han Solo during a game of sabacc.