cart·wheel /ˈkɑrtˌhwil, ˌwil/
  車輪,(貨車的車輪),橫翻斤斗
  cartwheel
       n 1: a wheel that has wooden spokes and a metal rim
       2: acrobatic revolutions with the body turned sideways and the
          arms and legs outstretched like the spokes of a wheel
       3: a dollar made of silver [syn: silver dollar]
       v : do cartwheels: perform an acrobatic movement using both
           hands and feet