to play at any game of chance for money or other stakes.

to stake or risk money, or anything of value, on the outcome of something involving chance

to gamble on a toss of the dice.

to lose or squander by betting (usually fol. by away )

He gambled all his hard-earned money away in one night.

to wager or risk (money or something else of value)

to gamble one's freedom.

to take a chance on; venture; risk

I'm gambling that our new store will be a success.

any matter or thing involving risk or hazardous uncertainty.

a venture in a game of chance for stakes, esp. for high stakes.

noun

staking , gaming , speculation , action * , laying odds , bet , casino , poker , racing , roulette , tombola