Shen Collection, Upper Volume Radical: Grass (cǎo) 蔟; Kangxi strokes: 17; Page 1054, Entry 37 Pronounced cu (falling tone). Shuowen Jiezi (Explanation of Simple and Compound Characters): Mats for silkworms. Book of Jin (Jinshu): Repairing silkworm frames, separating cocoons and arranging silk. Also means a nest. Rites of Zhou (Zhouli), Autumn Offices, Notes on the Zhetu Shi: Zheng Sinong stated: The term is read as the cu in juetou (bird's nest), referring to a nest. Also, according to the Collection of Rhymes (Yunhui), it is the same as the character for a cluster, meaning to gather or to assemble. Pronounced cou (falling tone). A name of a pitch pipe. Book of Rites (Liji), Monthly Ordinances: The pitch pipe corresponds to taicu. Note: Taicu means the yang energy is gathered together, reaching upward. Also written in a variant form (cu). Zhang Heng, Rhapsody on the Western Metropolis (Xijing Fu): The prongs of the fishing spear. Note: Pronounced cu (entering tone). The same as the variant form. Textual Research: In the Rites of Zhou, Autumn Offices, notes on the Zhetu Shi, the character Zhe has been corrected to Zhe in accordance with the original text.