一切經音義 3.50

3.50

䆤穴（上昌專反韻英穴也說文通也從身在穴中下玄决反鄭箋毛詩云鑿地曰穴說文土室也從宀八聲）。

䆤穴 (the upper character is *chāng* + *zhuān* [fanqie: chuān]; the Yunying says: "A hole or cavity." The Shuowen jiezi says: "To pierce through; derived from 'shēn' (body) inside an 'xué' (cave)." The lower character is *xuán* + *jué* [fanqie: xué]; Zheng [Xuan]'s commentary on the Mao Shi says: "Excavating the ground is called 'xué'." The Shuowen jiezi says: "An earthen chamber; derived from 'miàn' with 'bā' as phonetic").