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English definition of “bet”

bet

verb [I/T]  /bet/ (present participle betting, past tense and past participle bet) us  
to risk a sum of money on the unknown result of an event in the hope of winning more money than you have risked: [T] He went to the race track and bet $2 on a horse. [I] I bet that the Yankees won’t win the pennant this year. If you bet someone that something is true or will happen, you think it is likely: [T] I bet (you) she missed the bus.

bet

noun [C]  /bet/ us  
an agreement to risk money on the unknown result of an event: He placed a bet on the race. A bet is also a guess or opinion: My bet is that the senator will decide not to run again. A bet is also a chance or opportunity: Putting your savings in a high-interest account is a good bet/your best bet.
(Definition of bet from the Cambridge Academic Content Dictionary © Cambridge University Press)
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