一切經音義 36.254

36.254

上腭（昂各反俗字非正也說文云口上河也象形作谷音強略反象口中上腭也）。

上腭 (è [fanqie: 昂各反]; this is a vulgar character and not the standard form. The Shuowen says: 'The upper palate of the mouth.' It is a pictograph written as 谷, pronounced qiǎng [fanqie: 強略反], depicting the upper palate within the mouth).