Zi Collection, Page Position: Lower. Radical: Spoon (bǐ). Character: nǎo. Kangxi Stroke Count: 11. Page: 153, Number: 04.
The pronunciation is derived from the sounds nú and hào according to the Tang Dynasty Rhyme Dictionary (Tángyùn). It is also recorded as the sounds nǎi and lǎo in the Collected Rimes (Jíjùn). The pronunciation is similar to nǎo.
nǎo refers to the marrow inside the skull. The character composition uses the radical Spoon (bǐ). The bǐ element indicates two things leaning against each other. In the character, the chuān element symbolizes hair, and the xìn element symbolizes the shape of the brain — Explaining Graphs and Analyzing Characters (Shuōwén Jiězì).
This character is identical to the character nǎo — Expanded Rimes (Guǎngyùn).
It is also written in a variant form according to the Jade Chapters (Yùpiān).
It is sometimes written in another variant form; for a detailed explanation, refer to the entry for nǎo — Collected Rimes.