Yupian (Yuankanben) Guangyun Jiyun Shiming Fangyan Erya Boya (according to Jiyun) Guangya (according to Jiyun)
id du Shuowen
Shuowen: volume 06a, page 126a.08 addition
radical:
206 皐聲
fanqie: 古牢切 [kɑu]
Variants :
this character is not in the Duanzhu