(每日一词）wager

Wager /ˈweɪ.dʒɚ/ n. 赌注；打赌; v. 打赌；保证

meaning: an amount of money that you risk in the hope of winning more, by trying to guess something uncertain, or the agreement that you make to take the risk 

1) 词汇：wage 工钱（联想：w 弯 + age 年纪）

2) 后缀：-er 名词后缀 

e.g. She put a cash wager of $50 on the race. 她在赛马会上下了50美元钞票的赌注。