revolve

/rɪˈvɑlv/
verb
  1. To move in a circle around a central point or axis.
    • The ceiling fan revolves slowly to keep the room cool.
    • The Earth revolves around the Sun once every 365 days.
    • The planets in our solar system all revolve in the same direction.
  2. To have something as a main subject or focus; to center on.
    • The discussion revolved around the best way to save money.
    • Her entire life revolves around her children.
    • Most of the plot revolves around a mysterious letter.
  3. To turn over in the mind; to think about repeatedly.
    • She revolved the idea of moving to a new city for weeks.
    • I kept revolving the conversation in my mind, wondering what I should have said.
    • He revolved the problem in his head all night.