Mao Collection, Lower Volume
Radical: Square (fāng)
Kangxi stroke count: 19
Page 485, Entry 16
Tang Dynasty Rhyme Dictionary (Tangyun), Collection of Rhymes (Jiyun), Dictionary of Rhymes (Yunhui), and Corrected Rhymes (Zhengyun) all give the pronunciation sui (falling tone).
Shuowen (Explaining Graphs): A device used on a leading carriage, decorated with feathers, to signal advance. To advance is to proceed.
Rites of Zhou (Zhouli), Spring Offices, Ministry of Standards: Feathers are used to make a sui.
Also: The leading carriage carries a sui.
Commentary: The leading carriage is a state carriage.
Textual Research: Also: The leading carriage bears a sui. In accordance with the original text of the Rites of Zhou, the phrase bearing a sui has been corrected from loading a sui.