roughshod (Adjective) — (of a horse) having horseshoes with projecting nails to prevent slipping.
roughshod (Adjective) — (of persons or their actions) able or disposed to inflict pain or suffering. ex. "Stalin's roughshod treatment of the kulaks"
roughshod (Adjective) — Unjustly domineering. ex. "a manager who rode roughshod over all opposition"