The term COARSE FILE can be summarized as a type of file with a rough surface. It is also known as a RASP, which is a four-letter word. Coarse files are used for shaping and smoothing wood, metal, and other materials. They have a series of sharp teeth that can be used to remove material quickly. The teeth are usually arranged in a pattern that allows for efficient removal of material. Coarse files are often used in carpentry, metalworking, and other crafts.