What is spacex starship ?

Spacex is now always in news for experimenting heir star ship that is going to make the traveling in space especially to Planet Mars very easy. Regardless of the popularity, the star ship is not clear entity. I wanted to ask what is spaceX star ship, is it some kind of rocket or spacecraft and is designed as the space probes.
Spacex is now always in news for experimenting heir star ship that is going to make the traveling in space especially to Planet Mars very easy. Regardless of the popularity, the star ship is not clear entity. I wanted to ask what is spaceX star ship, is it some kind of rocket or spacecraft and is designed as the space probes.