一切經音義 64.7

64.7

欶指（又作嗽同所角反通俗文含吸曰欶戒文作𡂡俗字也）。

欶指 (Sucking the fingers: also written as 嗽; pronounced identically with the fanqie 所角 [suò]. The Tongsu wen states: "To hold in the mouth and suck is called 欶." In the Vinaya text it is written as 𡂡, which is a vulgar character.)