續一切經音義 3.43

3.43

溝阬（上苟侯反考工記云井間廣四尺深四尺謂之溝鄭注周禮云十夫二隣之田所以通於川也說文云水瀆也從水冓聲也下客庚反爾雅云阬虛也蒼頡篇云阬壑也陷也塹也古今正字從阜亢聲經作坑俗字也）。

Ditches and pits (溝阬: the first character has the fanqie 苟侯 [gou + hou / gōu]. The Kaogongji says: "Between well-fields, a channel four feet wide and four feet deep is called a ditch." Zheng's commentary on the Zhouli says: "The fields of ten men and two neighboring hamlets, by which [water] drains into streams." The Shuowen says: "A water ditch; formed from 水 [water] with 冓 as the phonetic component." The second character has the fanqie 客庚 [ke + geng / kēng]. The Erya says: "'阬' means a void." The Cangjie pian says: "'阬' means a ravine, a hollow, a moat." In the Gujin zhengzi, it is formed with 阜 as the radical and 亢 as the phonetic component. In scripture texts it is written as 坑, which is a vulgar character.)