Meaning of jackpot

jack•pot

1. the chief prize or the cumulative stakes in a game or contest, as in bingo, a quiz contest, or a slot machine.
2. a pot that accumulates until a player opens the betting with a pair of predetermined denomination, usually jacks or better.
3. an outstanding reward or success.
4. The firm has hit the jackpot with its new line of computers.
1. to achieve a sensational success; have sudden luck:The firm has hit the jackpot with its new line of computers.
2. to win a jackpot.