涵溝 [－沟]

Jyutping haam4 kau1
Pinyin hán gōu

Definitions (Wiktionary)
  1. noun, Taiwanese-Hokkien
    sewer; covered drain
    (syn.) 阴沟, 阴空, 暗沟, 暗溝, 陰空, 陰溝, 涵空