'jackpot' originates from the game of poker, specifically the term 'jacks or better,' where 'jack' referred to the card rank and 'pot' referred to the pool of money.

'jacks or better' transformed into the term 'jackpot' in the late 19th century, eventually becoming a term for a large prize or reward.

Initially, it referred to a poker game condition, but over time it evolved into its current meaning of a large prize or reward.