muffin topWiktionary 原文词源说明From the shape of the top of a muffin (a cupcake), which bulges over the top of its paper container.释义（英文）名词 Noun(figurative, colloquial, sometimes derogatory) The roll of fat that extends horizontally over the edges of the waistline of tightly fitting trousers.Used other than figuratively or idiomatically: see muffin, top: the top part of a muffin.