乌纱帽,《现代汉语词典》的解释是“纱帽,比喻官职,也叫乌纱。”这种解释不大确切。一、冠帽之别冠是帽的总称。“帽名猶冠也,义取于蒙覆其首。”我国古代蒙覆人首的服饰受封建制度的限制,有严格的区别,主要有以下几种：一是冠,特指皇帝和官吏等所戴的。《后汉书·舆服志》中就有冕冠、长冠、委貌冠等十九种。二是弁,古代官贵所戴。通常穿礼服时用的。赤 Wool hat, “Modern Chinese Dictionary” explanation is “yarn hat, metaphor of the official post, also known as yarn.” This explanation is not exact. First, the crown crown of the cap is the general term. “The cap name is still crown, righteousness to cover their head.” In ancient China, the first dress to be covered by the feudal system restrictions are strictly different, there are the following: First, the crown, especially the emperor and officials And so on. There are nineteen kinds of crowns, long crowns, and top crowns in “Post Han Yu’s Pursuits”. The second is 弁, ancient dignitaries wear. Used when wearing gowns red