a pole or bar hinged to the rear axle of a cart or the like in such a way that it can brace the vehicle against a road to prevent it from rolling downhill.
Mining. a short timber for propping up loose walls or spacing two sets.
verb (used with object)
to prop, support, or immobilize (a vehicle) by means of a sprag.
verb (used without object) 4.
to slow a vehicle by means of a sprag or, sometimes, by bracing the feet against the ground.
special use of dial. sprag
twig (Old English spræcg
shoot, slip); akin to sprig