A discolored spot; a stain.
The act of discoloring, or the state of being discolored; alteration of hue or appearance.
Any other mark or stain left on a surface from a sliding or rubbing object.
Any burn on the skin caused by scraping the skin against a surface.
A black mark left on a road surface from the sliding or skidding tires of a motor vehicle that has lost traction.
A visible feces stain left on underpants, trousers, or sometimes the toilet bowl.
A mark of a soiled finger wiped on a surface.