What does Shurooq means?

when I used [console-mode time prayer](https://apps.ubuntu.com/cat/applications/precise/itools/) for [my Ubuntu](http://www.ubuntu.com/) , there about was called Shurooq. One thing that I know about it that it 's shown time before allowed to held duha prayer. Are there another else what kind of shurooq is used to be and what does shurooq means?? Salam
Ahmad