To move in a circular or curving course or orbit. The planets revolve around the sun.
To consider or think about something repeatedly or from different angles. She revolved the idea in her mind for days before making a decision.
To cause to move in a circular or curving course or orbit. The engineer designed the mechanism to revolve the gears smoothly.
To have something as its main focus or subject; to be chiefly concerned with. The plot of the novel revolves around an ancient mystery.