freewheel /ˌfriːˈwiːl/ (also free-wheel) TEM8 ( freewheeling, freewheeled, freewheels )

• 1. 

  V-I If you freewheel, you travel, usually downhill, on a bicycle without using the pedals, or in a vehicle without using the engine. (骑自行车或开车时)凭惯性前进

  例：

  He freewheeled back down the course.

  他靠惯性滑行返回路途。