1. a wooden wedge or prop used to prevent something from moving
Usage: technical
2. a steel bar used to prevent a mine cart or machinery from rolling
Usage: mining

1. to prop or wedge something to prevent it from moving
Usage: technical

Examples

• The worker placed a sprag behind the wheel to keep the cart from rolling.
• He used a wooden sprag to hold the door open.
• The miners always sprag their equipment before leaving the shaft.
• She spragged the gate with a piece of wood.
• The mechanic spragged the wheels before working under the car.
• A metal sprag prevented the heavy machinery from sliding down the slope.