The word 肠子 (chángzi) is formed through a standard Chinese morphological process where the core character 肠 (cháng), which means "intestines" or "gut", is combined with the nominal suffix 子 (zi). The suffix 子 here does not carry independent meaning but functions to form a concrete, colloquial noun from the root, adding a casual or familiar tone, much like how "-ie" or "-y" can form diminutives in English (e.g., "dog" to "doggy"). Thus, 肠子 simply means "intestines" or "guts" in everyday spoken language, with the suffix making it sound more natural and less technical than the root character alone.