hit the jackpot

1 win a jackpot.

2 have great or unexpected success, especially in making a lot of money quickly. informal

☞ Originally, in the late 19th century, jackpot was a term used in a form of poker, where the pot or pool accumulated until a player could open the betting with a pair of jacks or higher cards. It is now used of any large money prize that accumulates until it is won.