jackpotting in English dictionary jackpotting Meanings and definitions of "jackpotting" noun The act of rewarding a dog with a large number of treats during training. noun The fraudulent exploitation of an automatic teller machine so that it dispenses cash that has not been withdrawn from an account. more Grammar and declension of jackpotting jackpotting (uncountable) more Sample sentences with "jackpotting" Declension Stem Try again Authors