gaming

(noun) the act of playing for stakes in the hope of winning (including the payment of a price for a chance to win a prize). Synonyms: gambling, play. Examples: "His gambling cost him a fortune." "There was heavy play at the blackjack table."

(verb) place a bet on. Synonyms: bet on, back, gage, stake, game, punt. Examples: "Which horse are you backing?." "I'm betting on the new horse."