Definitions
1.NounA black mark left on a road surface from the sliding or skidding tires of a motor vehicle that has lost traction.
2.NounAny other mark or stain left on a surface from a sliding or rubbing object."The ladder that slipped left a skid mark across the tile floor.; The girl had skid marks on the knees of her jeans."
3.NounA visible feces stain left on underpants, trousers, or sometimes the toilet bowl.
4.NounA mark of a soiled finger wiped on a surface.
5.NounAny burn on the skin caused by scraping the skin against a surface.