The evidence only shows that this character is used to indicate the reading of the intial of 搊, whos readings in other sources are variously given as 楚鳩切, 初尤切, 楚蒐切. The reading for 簉 (U+7C09) is 初救切, thus matching the one of the initials. Given the shape, this is possibly a variant of 簉,

一切經音義卷第四十二 續一切經音義卷第十

The other version of 一切經音義 is written as 簉 (U+7C09). In addition, in 叨簉, the reading of 簉 is 搊瘦切. Therefore, [⿱𥫗适] is very likely a misprinted form of 簉.