Related Clues:

• School board?
• Up-and-down toy
• Ma(n) with a bow
• Break the monotony
• It can go around the world
• Fluctuate repeatedly
• It takes two to do this
• Need for ''walking the dog''
• Ma in music
• Playground plank
• Playground piece
• Playground piece for two
• Ditz
• Fulcrum locale
• Playground apparatus for two