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- Dictionaryflint/flɪnt/
noun
- 1. a hard grey rock consisting of nearly pure silica (chert), occurring chiefly as nodules in chalk: "houses built of brick and flint"
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noun
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Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires. Wikipedia