A gamble is when you take a risk and hope for a good outcome. You might gamble your money on something uncertain.
Think about it like this: when you go to a casino or a betting shop, people often talk about "gambles" - they're talking about taking a chance with their money. But the word can also be used in everyday life. Maybe you decide to quit your job and start your own business - that's a gamble. Or maybe you invest all of your savings in something new, hoping it will pay off in the future. In this case, you're taking a risk, and if things don't work out as planned, you might lose everything. The key is that with a gamble, there's always an element of uncertainty - you can't be sure what's going to happen next.
To take a risk, with the potential of a positive outcome.
