1. the top prize in a lottery, slot machine, or other gambling game
2. a large cash prize or reward
3. a great success or stroke of luck
Usage: informal

Examples

• She won the lottery jackpot of ten million dollars.
• The slot machine jackpot kept growing until someone finally hit it.
• Landing that job was like hitting the jackpot.
• The company struck the jackpot with their new product.
• He thought he’d hit the jackpot when he found the rare coin.
• The casino’s progressive jackpot reached record levels.
• Finding that antique in the garage sale was a real jackpot.