Horse mill

A horse mill is a type of machine that was used in the past to grind grain into flour. It is similar to a water mill, which uses the power of water instead of a horse. In a horse mill, the horse would be harnessed to a beam which was connected to a large millstone. The horse would walk in a circle and its movements would cause the millstone to turn, which would grind the grains. The flour would then be collected from the bottom of the millstone.