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rock fragments 1-10 cm in diameter that have been rounded to varying degrees. The sharp-pointed fragments are rounded by the running water of rivers or by lake and seacoast waves. Sea shingle usually has a flatter shape than river shingle. Shingle is categorized as small (1-2.5 cm), medium (2.5-5 cm), and large (5-10 cm). Shingle is used chiefly in road construction.
a wooden roofing material in the form of a small plate having a wedge-like cross section. The sharp edge of the shingle fits into a groove in the thick edge of the neighboring shingle when the roof is covered. Shingles are made by hand (by splitting radially) and by machine (by sawing) from a straight layer of white spruce (the best shingles), pine, or aspen. Shingles are 50–60 cm long and 9–11 cm wide. They will last, depending on the climate and on the type and treatment of the wood used, for 25–35 years. Shingles are used in rural construction.