What characteristic does the word "sinuous" describe?

The word "sinuous" describes something that is winding or has many curves. This term is often used to convey a sense of elegance or gracefulness in movement or shape, much like a snake that twists and turns. When something is referred to as sinuous, it implies a fluidity or complexity in its form, characterized by a series of soft, curvaceous shapes rather than anything that is straight or rigid. This is why the selection that aligns with the meaning of "sinuous" is the one that indicates a winding or curvy nature.