A typically U-shaped [[metal]] band secured to the [[horse|horse's]] hoof with nails used to protect the hoof from wear.  They're typically made by a [[blacksmith]] and placed on the horse by a farrier (common for both jobs to be performed by the same person).

h4. See also
* [[Horseshoe ornament]]
* [[Horseshoe print]].
蹄鉄 馬蹄