The Chinese word **胸脯** (xiōngpú), meaning "chest" or "breast," is a compound noun formed through semantic combination. The first character, **胸** (xiōng), independently means "chest" or "thorax," establishing the general body part. The second character, **脯** (pú), originally means "chest meat" or "breast" (as in poultry or meat cuts), specifying the fleshy, frontal area. Together, they create a more vivid and concrete term than **胸** alone, with **脯** acting as a semantic complement that emphasizes the muscular or fleshy part of the upper torso, illustrating a common Chinese word-formation process where two related-meaning characters combine to refine and specify a concept.