おっ広げる

What does おっ広げる mean in English?

1. to spread; to extend; to expand; to enlarge; to widen; to broaden(v1, vt)
2. to unfold; to open; to unroll; to unwrap(v1, vt)
3. to scatter about; to spread around(v1, vt)
4. to make flourish; to cause to prosper(v1, vt)