1.把...拉下马来,使摔下马来
2.赶...下台;推翻
3.卸去(驾车的)马
1.to knock or throw somebody from a horse
2.to bring somebody down from a high office or position
1.She was unhorsed while riding in the garden.
她在花园骑马时被马从马背上掀了下来。