Crocking is a phenomenon that occurs when the dye on fabric rubs off onto other surfaces. It is a common problem with dark-colored clothes and can cause stains and discoloration on furniture, skin, and other fabrics. Synonyms for crocking include color bleeding, dye transfer, staining, and running. To avoid crocking, it is advisable to wash new clothes separately and use color catchers in the wash. It is also important to follow the care instructions on the garment label and avoid using harsh detergents or bleach. By taking these precautions, you can prevent crocking and extend the life of your clothing.