The Chinese word **轮廓 (lúnkuò)**, meaning "outline" or "contour," is a compound word formed by combining two characters with related meanings. The first character, **轮 (lún)**, originally means "wheel" or "circle," evoking a sense of a round, enclosing form or perimeter. The second character, **廓 (kuò)**, means "broad," "wide," or "to expand," and carries the connotation of an outer boundary or frame. When combined, the two characters metaphorically reinforce each other to depict the defining outer shape or silhouette of an object, where **轮** suggests the circular or enclosing aspect and **廓** emphasizes the expansive boundary, together creating the concept of a delineated form.