The definition of turnover, otherwise also known as rollover/wager is the total amount of bets that you have placed. Each time you place a bet, you will accumulate a turnover amount if the outcome of your bet is either win or lose. Any bets resulting in a draw or tie will not generate any turnover amount. This requirement is commonly imposed on bonuses as stated in the promotional terms & conditions to ensure fairness to both promotion applicants and the casino.