It means using an umbrella. You can also say “打伞”. Ex. 下雨的时候要打伞（You need to use an umbrella when it rains.） Ps. Since I am a Chinese, it is true that we often use 打伞 rather than 打雨伞, but we also CAN use 打雨伞 to do the same job and no one will think it is weird. BTW I am talking about this from a daily life point of view, not from a linguistic one.

It means "hit the umbrella" literally. I don't agree with the other answers. 打雨傘 and 打傘 are totally different expressions. No one would use 打雨傘 to say "use an umbrella" in Chinese. That should be 打傘. However, it appears to be the obscene gesture known as "Bras d'honneur" that is commonly used in France. Reference: https://en.wikipedia.org/wiki/Bras_d%27honneur https://www.zhihu.com/question/20214257

That means use a umbrella,don't means beat it. Hahaha ╮(‵▽′)╭

go out with a umbrella

打雨伞 使用雨伞