Soilures are dirty marks or stains on something.
Soilures are usually seen as bad or unpleasant because they make things look dirty.
Examples:
The soilures on his shirt were hard to clean.
She tried to remove the soilures from the carpet.
The soilures on the wall were very noticeable.
The dog's muddy paw prints were soilures on the clean floor.
The soilures on the white dress were very obvious.
The soilures on the window made it hard to see through.