Xu Collection, Lower Volume
Radical: Leaf (yè)
Xu. Kangxi strokes: 13. Page 1400, Entry 01.
Pronounced xu.
According to the Shuo Wen Jie Zi (Explaining Graphs and Analyzing Characters), it is the appearance of a head that is cautious.
Also, from the Zhuangzi, Heaven and Earth chapter: Appearances that are restless and uneasy. Commentary: Restless, the appearance of being lost. Also written as a variant form (xu).
Also, Zhuanxu, the title of the Emperor Gaoyang.
From the Book of Rites (Liji), Monthly Ordinances: His emperor is Zhuanxu.
From the Comprehensive Customs (Fengsu Tong): Zhuan means focused. Xu means sincere.
From the Comprehensive Meaning of the Five Classics (Wujing Tongyi): Zhuanxu, where xu is like being joyful.
Also a star name. From the Erya, Explaining Heaven: The Void of Zhuanxu is the Void. Commentary: Zhuanxu is of the water virtue, located in the north.
Pronounced yu.