The Chinese word **包皮** is a compound noun formed by combining two characters: **包** (bāo), meaning "to wrap" or "to cover," and **皮** (pí), meaning "skin." Together, they create a literal, descriptive term meaning "wrapping skin," which directly and anatomically refers to the **foreskin**—the fold of skin covering the head of the penis. This formation follows a common pattern in Chinese where two meaningful characters are combined to precisely name a specific object or concept based on its function and physical property.