The word **后脑勺 (hòunǎosháo)**, meaning "the back of the head," is formed through a logical, descriptive compound structure where each character contributes a specific semantic component: **后 (hòu)** means "back" or "rear," **脑 (nǎo)** means "head" or "brain," and **勺 (sháo)** means "spoon," which here is used metaphorically to describe the curved, scoop-like shape of the occipital part of the skull. Thus, the term literally translates to "the back-of-the-head spoon," creating a vivid, image-based compound that precisely denotes the anatomical region.