General Definition:
1. Of any two things (real or imaginary, abstract or concrete), for both things to go around each other at the same time, or any thing or activity that can be directly or metaphorically associated with this in context.
As a Verb or Adjective:
1. To turn around or spin. English = rotate.
2. To combine or blend in a circular motion. English = mix.
3. To be in the area or the vicinity. English = around.
4. An approximation. English = about.