verb · to sit astride or ride (a horse, bicycle, etc.)

他每天骑自行车去上学。

measure word, noun · saddle horse or mounted soldier

那一支精锐的铁骑向敌方阵营发起冲锋。

measure word, verb · measure word for saddle horses

他一骑绝尘，远远地把其他竞争者甩在了后面。