一切經音義 6.244

6.244

溝坑（上古候反周禮云通水曰溝桂苑珠叢云邑中之瀆通水也說文云水𤅋也廣四尺深四尺從水冓鉤后反聲也下苦耕反爾雅坑墟也考聲云坑坎也古今正字云坑壍青焰反或作阬從土亢聲）。

溝坑 (ditches and pits: the first character is [pronounced with the fanqie] 古候. The Rites of Zhou says: 'A water channel is called a gōu (溝).' The Guiyuan zhuchong says: 'A canal in a settlement through which water passes.' The Shuowen jiezi says: 'A water conduit, four feet wide and four feet deep; it derives from 水 with 冓 [鉤后] as phonetic.' The second character is [pronounced with the fanqie] 苦耕. The Erya says: 'A kēng (坑) is an excavation.' The Kaosheng says: 'A kēng is a pit.' The Gujin zhengzi says: 'A kēng is a moat (壍, [pronounced with the fanqie] 青焰).' It is also written as 阬; it derives from 土 with 亢 as phonetic.)