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sprag

DEFINITIONS OF: sprag

1

n a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline

Type of:
chock, wedge
a block of wood used to prevent the sliding or rolling of a heavy object

n a wooden prop used to support the roof of a mine

Synonyms:
pitprop
Type of:
prop
a support placed beneath or against something to keep it from shaking or falling
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