9 horseshoe

horseshoe
(also shoe), n
1 U-shaped piece of iron nailed to the bottom of a horse´s hoof and regarded as a symbol of good luck 马蹄铁; 马掌; 马蹄铁吉祥物. 2 thing having this shape 马蹄铁形物
    Stand in a horseshoe facing me. 面向我排成半圆形站著.
    [attrib 作定语]
a horseshoe bend 马蹄铁形弯曲.