1. jackpot

1. 赌博：经改革的规则将允许赌博(jackpot)游戏机和高值博彩游艺机能够接受硬币和纸币付款,并应游戏者的决定,将在店中赢得的钱作为继续游戏的赌资而不需游戏者再放钱进机器.

2. 头奖：这是因为彩票的购买很方便而且下注的单位很小(一般1元1张),头奖(Jackpot)的金额一般很丰厚(采用Pari-mutuel betting 方式) ,国家的政策允许等等多种原因.

1. （游戏或彩票的）头奖，最高奖；（尤指游戏中的）累积赌注金
    A jackpot is the most valuable prize in a game or lottery, especially when the game involves increasing the value of the prize until someone wins it.

    e.g. A nurse won the £5 million jackpot.
           一个护士赢得了500万英镑的头奖。

2. 取得巨大成功；赢了一大笔钱；交好运
    If you hit the jackpot, you have a great success, for example by winning a lot of money or having a piece of good luck.

1. any outstanding award

2. the cumulative amount involved in a game (such as poker)

    Synonym: potkitty