belly

The word carries a visceral, physical weight that often leans toward the informal or the comical. It focuses on the soft, rounded protrusion of the midsection, evoking images of comfort, gluttony, or vulnerability. While abdomen is clinical and waist is a measurement, belly is a descriptive term for the flesh itself. In a non-human context, it describes the deepest or most central part of something, such as the belly of a ship or a valley. This extension suggests a cavernous interior or a hidden core, shifting the feeling from surface softness to structural depth.