sprag | sense examples, Usage and Definition from wordnet dictionary online

Noun sprag has 2 senses

sprag - a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline
--₁ is a kind of chock, wedge
pitprop, sprag - a wooden prop used to support the roof of a mine
--₂ is a kind of prop

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