sprag definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- a roof prop used in a coal mine
- ☆ a device for preventing a vehicle from rolling backward on a grade
Origin: probably ; from Scandinavian as in Danish sprag, twig ; from base of sprage, to crack, crackle: for Indo-European base see spark
sprag definition by American Heritage Dictionary
- a. A piece of wood or metal wedged beneath a wheel or between spokes to keep a vehicle from rolling.b. A pointed stake lowered at an angle into the ground from a vehicle to prevent movement.
- A prop to support a mine roof.
Origin: Perhaps of Scandinavian origin.