續一切經音義 4.146

4.146

咀沫（上慈呂反切韻咀嚼也字林咀齧也亦作齟蒼頡篇咀噍也下莫割反即水沫也案咀沫即口中廷沫也）。

咀沫 (Chewing froth: the upper character has the fanqie 慈呂; the Qieyun says 咀 means to chew; the Zilin says 咀 means to bite; it is also written 齟; the Cang Jie pian says 咀 means to chew. The lower character has the fanqie 莫割; it means watery froth; note: 咀沫 refers to the spittle and foam in the mouth).