1 (used about a river, etc) to have no more water in it （指河流等）干涸

2 to stop being available 枯竭: Because of the recession a lot of building work has dried up. 由于经济衰退，很多工程都停摆。

3 to forget what you were going to say, for example because you are very nervous 忘记要说的话（如因为紧张）: When he came on stage and saw the audience, he dried up completely. 他走上舞台见到观众时，把台词忘得一乾二净。