The Chinese word **裤裆** (*kùdāng*), meaning "crotch of pants," is a compound noun formed through semantic combination. It consists of the character **裤** (*kù*), which means "trousers" or "pants," and **裆** (*dāng*), which specifically refers to the "crotch" or "gusset" in a garment. The formation is purely descriptive and logical: the first character establishes the general category (an item of clothing), and the second character specifies the exact part or location (the crotch area). This follows a common pattern in Mandarin where two related meaning-based characters (morphemes) are combined to create a precise term for a concrete object or concept.