1. sprag(n = noun.artifact) - a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline;
is a kind of chock, wedge
2. sprag(n = noun.artifact) pitprop - a wooden prop used to support the roof of a mine;
is a kind of prop
A young salmon. [1913 Webster]
A billet of wood; a piece of timber used as a prop. [1913 Webster]
1. To check the motion of, as a carriage on a steep grade, by putting a sprag between the spokes of the wheel. R. S. Poole. [1913 Webster]
2. To prop or sustain with a sprag. [1913 Webster]
See Sprack,
sprag, n.
1 a thick piece of wood or similar device used as a brake.
2 a support-prop in a coal mine.
Etymology:
19th c.: orig. unkn.
N instrument, machinery, mechanism, engineering, instrument, organ, tool, implement, utensil, machine, engine, lathe, gin, mill, air engine, caloric engine, heat engine, gear, tackle, tackling, rig, rigging, apparatus, appliances, plant, materiel, harness, trappings, fittings, accouterments, barde, equipment, equipmentage, appointments, furniture, upholstery, chattels, paraphernalia, mechanical powers, lever, leverage, mechanical advantage, crow, crowbar, handspike, gavelock, jemmy, jimmy, arm, limb, wing, oar, paddle, pulley, wheel and axle, wheelwork, clockwork, wheels within wheels, pinion, crank, winch, cam, pedal, capstan, wheel, inclined plane, wedge, screw, spring, mainspring, can hook, glut, heald, heddle, jenny, parbuckle, sprag, water wheel, handle, hilt, haft, shaft, heft, shank, blade, trigger, tiller, helm, treadle, key, turnscrew, screwdriver, knocker, hammer, edge tool, borer, vice, teeth, nail, rope, peg, support, spoon, arms, oar, cardiograph, recapper, snowplow, tenpenny, votograph, instrumental, mechanical, machinal, brachial.