freewheel

1.[i](+ adv./prep.)（骑自行车）滑行to ride a bicycle without using the pedals

1.靠惯性滑行

2.随心所欲[放任自流]地生活[行动]

1.(自行车的)飞轮;【机】滑轮

1.a mechanism in the hub of the rear wheel of a bicycle that enables the rear wheel to continue to rotate when the rider stops pedaling

2.a mechanism in the transmission of a motor vehicle that disengages the drive shaft and allows it to rotate freely when revolving at a higher speed than the engine shaft

1.to continue moving on a bicycle or in a vehicle without using power to drive the wheels

2.to live or act without conventional constraints, purpose, or regard for responsibilities

3.to move on a bicycle without moving the pedals, or to move in a car without switching on the engine, usually down a slope