1. 刃を通すことで鉄のシートを切る大きな刃のついた道具(a large edge tool that cuts sheet metal by passing a blade through it)
2. 平行な面が平行を維持しようとするが方向平面に変えられる物体の変形(a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves)