Pronunciation: (stûr'up, stir'-, stur'-),[key] —n. 1. a loop, ring, or other contrivance of metal, wood, leather, etc., suspended from the saddle of a horse to support the rider's foot.
2. any of various similar supports or clamps used for special purposes.
3. Naut.a short rope with an eye at the end hung from a yard to support a footrope, the footrope being rove through the eye.
4. Also called binder. (in reinforced-concrete constructions) a U-shaped or W-shaped bent rod for supporting longitudinal reinforcing rods.