Yupian (Yuankanben) Guangyun Jiyun Shiming Fangyan Erya Boya (according to Jiyun) Guangya (according to Jiyun)
id du Shuowen
Shuowen: volume 12a, page 258a.04 addition
radical:
441 臽聲
fanqie: 苦洽切 [kʰɐp]
this character is not in the Duanzhu