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すいを排はい水すいする。

  A subterranean drain is installed under the road to drain rainwater.