A high roller, also referred to as a whale or cheetah, is a gambler who consistently wagers large amounts of money. High rollers often receive lavish "comps" from casinos to lure them onto the gambling floors, such as free private jet transfers, limousine use and use of the casinos' best suites.
Casino is the name of the gambling place where every one gets chance of gambling. The word casino is came from the Italian word which means little house. The main purpose of casino is to give entertainment to the player. It comes with restaurant, hotels and with the shopping malls.