Flint is one of the important type of rocks. If we have to define Flint in general, Flint is a hard type of sedimentary rock that produces a small piece of burning material when hit by steel. Flint comes under Sedimentary Rocks. All Sedimentary Rocks have similar properties and formation process. Along with Flint Definition, know more about the History of Flint, Etymology of Flint in next sections.