A dead axle on a carriage or wagon that has terminal spindles on which the wheel revolve . winds whipped the piled leaves into churning masses ; a car stuck in the churned-up mud .
马车上或货车上有车轮围着旋转的末端心轴的从动轴。秋风吹动成堆的树叶打着旋；陷在泥泞里旋转着轮子的汽车。
churned-up