shod (adj.)

also rough-shod, late 15c., "shod with shoes armed with points or calks," from rough (adv.) "in a rough manner" (late 14c.; see rough (adj.)) + shod. Originally of horses shod with the nail-heads projecting from the shoe to prevent slipping on roads. To ride roughshod over something figuratively is by 1861 in that wording.

"put shoes on; provide (someone or something) with a shoe or shoes," Middle English shon, from Old English scogan "to shoe," from the root of shoe (n.). In reference to horses from c. 1200. Related: Shoed; shoeing; shod.