Meaning

noun game equipment consisting of an open ring of iron used in playing horseshoes

noun U-shaped plate nailed to underside of horse's hoof

verb equip (a horse) with a horseshoe or horseshoes

originA metal horseshoe (noun sense 1) Calks (identified by the letter "C" on the shown horseshoe) consist of spur-point and a shank to form an antislipping device. Etymology tree Proto-Indo-European *ḱers- Proto-Indo-European *-ós Proto-Indo-European *ḱr̥sós? Proto-Indo-European *h₁wers-? Proto-Indo-European *wers- Proto-Indo-European *-ḗn Proto-Indo-European *wérsēn Proto-Indo-Iranian *(w)ŕ̥šā…

Etymology from Wiktionary, CC BY-SA 3.0