續一切經音義 5.267

5.267

胷臆（上香邕反說文胸膺也膺即臆也或作匈亦通下應力反說文云臆亦胷骨也從肉從憶省聲也）。

胷臆 (The upper character has the fanqie 香邕 [x- + -(ʔ)wong = xiōng]; the Shuowen says: '胷 means the chest [膺]; 膺 is the 臆.' It is also written as 匈, which is also acceptable. The lower character has the fanqie 應力 [y- + -(l)ik = yì]; the Shuowen says: '臆 also means the breastbone; it is formed with the classifier 肉 [flesh] and an abbreviated form of 憶 as phonetic').