Yupian (Yuankanben) Guangyun Jiyun Shiming Fangyan Erya Boya (according to Jiyun) Guangya (according to Jiyun)
id du Shuowen
Shuowen: volume 12a, page 250b.07 addition
radical:
439 敖聲
fanqie: 五交切 [ŋau]
this character is not in the Duanzhu