sprag Syllabification: (sprag)Pronunciation: /sprag/Definition of sprag noun 1a simple brake on a vehicle, especially a stout stick or bar inserted between the spokes of a wheel to check its motion. a one-way clutch that keeps a vehicle from rolling backwards. 2 Mining a prop used to support a roof, wall, or seam. Origin: mid 19th cent: of unknown originsprag in other Oxford dictionaries Definition of sprag in the British & World English dictionary
