According to McDonald’s, the McNugget shape listed with the bell, ball, and boot is the bow-tie.
Chicken McNuggets are made in four standardized shapes: bell, ball, boot, and bow-tie. The designs are formed during production rather than occurring randomly, giving the product its familiar variety while keeping the pieces within controlled size and thickness ranges.
The shapes also have a practical purpose. McDonald’s says they are designed to support consistent cooking times, an important food-safety consideration in a mass-produced product. Their silhouettes additionally make nuggets easy to recognize and fun for customers, especially children.
A terminology mix-up can arise because the bow-tie shape is also called the “bone” in some McDonald’s materials and discussions. Thus, “bow-tie” and “bone” can refer to the same fourth shape, but bow-tie is the answer matching this question’s wording and options.