Marled is a term used to describe yarn that has been spun from two or more strands of different colors. This creates a unique, variegated effect that is often used in knitting and weaving to add visual interest and texture to a finished project. Some synonyms for marled include tweed, heather, melange, and multicolored. Tweed typically refers to yarn that includes both light and dark strands, while heather is made from single color strands that are blended together. Melange is a term that describes a mix of different types of fibers, while multicolored can refer to any yarn that contains more than one color.