暗あん溝こう

noun

subterranean drain; culvert; conduit

Refers to an underground drainage channel or pipe, often used in civil engineering contexts. Similar to 暗渠 (あんきょ), but 暗溝 may emphasize a smaller or more specific conduit.

See also: 暗渠 (あんきょ)

• 道どう路ろの下したに暗あん溝こうを設せっ置ちして雨う水