Mao Collection, Middle Volume
Radical: Door (hù)
Page 415, Entry 07
According to Collection of Rhymes (Jiyun) and Rhyme Collection (Yunhui), pronounced tai.
According to Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to the sliding door on the side of a carriage with a canopy.
Also, according to Collection of Rhymes (Jiyun) and Classified Dictionary (Leipian), pronounced ti.
Also, according to Collection of Rhymes (Jiyun), pronounced di. The meaning remains the same.
According to Explaining Graphs and Analyzing Characters (Shuowen Jiezi), the character is formed with the radical for door and the phonetic element da. It is distinct from the character below that uses the radical for dog.