The word "蜘蛛网" is formed by combining the two-character term "蜘蛛", meaning spider, with the character "网", meaning web. "蜘蛛" is a disyllabic morpheme where both characters incorporate the radical 虫, indicating insects or creeping creatures, and together they represent the concept of a spider. By appending "网", the compound directly denotes the web created by a spider, resulting in the meaning "spider web".