A parlay bet simply combines multiple wagers into one bet. It does this by rolling over the winnings from each individual wager into the next leg of the wager. Each leg  or individual bet in the parlay must win for the parlay to grade as a winner.

A parlay bet involves combining multiple individual selections into a single wager. The main difference between a parlay bet and a straight bet is that all of your selections must win for your parlay bet to cash. A single losing individual pick means the entire parlay bet results in a loss.

A croupier or dealer is someone appointed at a gambling table to assist in the conduct of the game, especially in the distribution of bets and payouts.

The dealer's assistant is called a croupier. (2) Dealer. The dealer is in charge of the conduct of the game. His main duties are: spinning the wheel, throwing the roulette ball, announcing winners, collecting losing bets, paying off winning bets.