Zi Collection, Page Position: Lower. Radical: Box (fāng). Character: biàn. Kangxi stroke count: 7. Page 153, number 31.
Tang Dynasty Rhymes (Tangyun), Collected Rhymes (Jiyun), and Rhyme Assemblies (Yunhui) note the pronunciation as a fanqie (a traditional method of indicating pronunciation) spelling of pí and biàn, sounding the same as biàn.
The Erudite Expounder (Boya) defines it as a sì, a type of bamboo container used for storing items.
Expanded Rhymes (Guangyun) defines it as a bamboo implement.
Also, the Jade Chapters (Yupian) defines it as a vessel for holding ceremonial caps and hats. It is interchangeable with the character fán.