horseshoe (U-shaped shoe of a horse, now typically made of metal); horseshoe whip snake (Hemorrhois hippocrepis); horseshoe bat (the monotypic family Rhinolophidae); ironwort (Sideritis gen. and spp.); horseshoe vetch (Hippocrepis gen. and spp.)
to shut; to close; to do up (of clothing); to switch off, to turn off (of a device or an appliance); to shut down, to discontinue, to axe (of a service)