The word "绰号" is formed by combining two characters whose core meanings visually and conceptually converge to create the idea of a nickname. "绰" carries connotations of abundance, casualness, or a loose, descriptive quality, while "号" means a name, title, or designation. Together, they evoke the image of an additional, often vivid or descriptive name that exists alongside one's formal name, a "loose" or informal title that is "called out" to characterize a person.