1. 呕吐;呕出
When someone throws up, they vomit.
2. 激起,扬起,搅起,溅起(尘土、石子或水)
If something throws up dust, stones, or water, when it moves or hits the ground, it causes them to rise up into the air.
3. 匆匆搭建起来;匆忙建成
If you say that a building or structure is thrown up, you mean that it is built or made very quickly, usually so that it is not of very good quality.
4. 产生;突出;凸显
To throw up a particular person or thing means to produce them or cause them to become noticeable.