noun. a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline.
noun. a wooden prop used to support the roof of a mine.
1. Adjective There are also several more sprag, or one way clutches. 2. Noun, singular or mass Normally, if the forward sprag in a torque converter is going bad or is broken, it will not allow the vehicle to move forward when in drive.
