iron heel

1. The explosive was sparked off by someone striking the iron heel of his boot on the stone floor.
   炸药是某人用皮靴的铁后跟撞击石头地面产生的火星而引爆的。
2. Genghis Khan, the king on the horse has left startling quiver memory at the Eurasia with the iron heel like the whirlwind.
   马背上的王者成吉思汗以旋风般的铁蹄，在欧亚大陆留下了令人心惊胆颤的记忆。

noun

1. an instrument of torture that is used to heat or crush the foot and leg

   Synonym:    bootthe bootiron boot