Related Clues:

• Power - rock
• Lean from side to side — influence
• Power — rock
• Move like a pendulum
• Rock and rule
• Strong influence
• Rock to the music
• Turn at the bar, perhaps
• Move back and forth
• Oscillation
• Spin, as an office chair
• Swing, as trees in the wind
• Swing back and forth
• Office-chair feature
• Move on a pivot