Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sprag

2 senses of sprag

Sense 1
sprag -- (a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline)
       => chock, wedge -- (a block of wood used to prevent the sliding or rolling of a heavy object)

Sense 2
pitprop, sprag -- (a wooden prop used to support the roof of a mine)
       => prop -- (a support placed beneath or against something to keep it from shaking or falling)