Horse·shoe n.
 1. A shoe for horses, consisting of a narrow plate of iron in form somewhat like the letter U, nailed to a horse's hoof.
 2. Anything shaped like a horsehoe, such as a U-shaped bend in a river.
 3. Zool. The Limulus or horsehoe crab.
 Horsehoe head Med., an old name for the condition of the skull in children, in which the sutures are too open, the coronal suture presenting the form of a horsehoe. --Dunglison.
 Horsehoe magnet, an artificial magnet in the form of a horsehoe.
 Horsehoe nail. See Horsenail.
 Horsehoe nose Zool., a bat of the genus Rhinolophus, having a nasal fold of skin shaped like a horsehoe.

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