a large cash prize in a game or lottery, especially one t Meaning, pronunciation, example sentences, and more from Oxford Dictionaries. Jackpot definition, the chief prize or the cumulative stakes in a game or contest, as in bingo, a quiz contest, or a slot machine. See more. Jackpot definition: A jackpot is the most valuable prize in a game or lottery, especially when the game | Meaning, pronunciation, translations and examples. Switch to new thesaurus. Sally hit the jackpot in the lottery. Examples of jackpot in a Sentence The lottery jackpot is up to one million dollars. When the pot is opened the opener does so by putting up any sum he chooses, within the limit, and novo online companions must pay in the same amount or "drop. Examples from the Web for jackpot Expand. At first when we go out he's as shy as the man on the steamer who would rather play pedro when they make 'em all jackpots. See more synonyms on Thesaurus.