/ˈweɪʤə/ – 1. noun
2. verb
Definition: 1. lời thề, lời tuyên thệ;
2. cá cược, đánh cá, đánh cược.
A more thorough explanation: A wager is a contract by which two or more parties agree that a sum of money or other valuable thing shall be paid or delivered to one of them on the happening or not happening of an uncertain event.
Example: The two parties entered into a wager over the outcome of the basketball game, with each agreeing to pay the other $100 if their chosen team lost.