jackpot
noun [ C ]
uk/ˈdʒækpɒt/ usa large amount of money that you win in a game or a lottery:
One ticket holder won a jackpot of 4.2 million euros.
The weekly jackpot prize averages 2 million dollars.
a big unexpected success, profit, etc.:
The new executive chairman would have to meet set targets to earn a shares jackpot.
hit the jackpot
to have a big success or make a lot of money, especially if this is unexpected:
As the man with responsibility for the US economy, he had hit the jackpot with strong growth and low inflation.