1. 呈交；交上(试卷等)： 例句: You must give in your examination papers now. 你们现在必须把你们的试卷交上来。

2. 登记，报上(姓名等)： 例句: Give in your name if you are willing to help. 假如你愿意帮忙，就报上你的姓名。

3. 投降，屈服；让步，认输： 例句: He was compelled to give in. 他被迫屈服。

4. 塌陷；垮： 例句: The ground gave in under the weight of the heavy car. 地面在沉重的汽车的重压下塌陷了。 in作副词。