How would you define 'universe'?

Here is how I would define 'universe':

NOUN

1) all of physical reality, including the earth and its living things as well as all other entities and phenomena that exist in outer space

2) a reality thought to be separate and parallel to our own governed by its own laws of physics and having its own dimensions of space and time

3) an entire set of proposals, opinions, etc. open for discussion

4) an entire group of people or things from which a sample may be taken

5) a sphere of influence, interest, activity, or experience