16 CFR § 1511.2 - Definitions.
(a) A pacifier is an article consisting of a nipple that is intended for a young child to suck upon, but is not designed to facilitate a baby's obtaining fluid, and usually includes a guard or shield and a handle or ring.
(b) Guard or shield means the structure located at the base of the nipple used to prevent the pacifier from being completely drawn into the child's mouth.
(c) Handle or ring means the structure usually located adjacent to the guard or shield used for holding or grasping the pacifier. A hinged handle or ring is one that is free to pivot about an axis parallel to the plane of the guard or shield.