一切經音義 19.94

19.94

䆫牖（上楚雙反考工記云在牆曰牖在屋曰䆫說文象形作囱又作𡆧俗從片作𤗉經從穴皆非正體也）。

Windows (䆫牖: the upper character is with the fanqie of 楚 and 雙. The Kaogongji states: "In a wall it is called 牖; in a roof it is called 䆫." The Shuowen gives the pictograph as 囱, also written as 𡆧. The vulgar form is written with the radical 片 as 𤗉. In the scriptures it is written with the radical 穴, neither of which is the correct standard form).