1 N-COUNT [usually singular] （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. （游戏或彩票的）头奖，最高奖；（尤指游戏中的）累积赌注金

2 PHRASE 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. 取得巨大成功；赢了一大笔钱；交好运 [informal]