jack ‧ pot /ˈdʒækpɒt $ -pɑːt/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Origin: ⇨ ↑ jack 1 (2) + ↑ pot 1 ; from a card game in which a player needs two jacks to begin ]
a large amount of money that you can win in a game that is decided by chance:
a £50,000 jackpot
jackpot winners
⇨ hit the jackpot at ↑ hit 1 (25)