引水道 [－－－]

Jyutping jan5 seoi2 dou6
Pinyin yǐn shuǐ dào

Definitions (粵典–words.hk)
  1. 名詞
    起​喺​山​上面​用​嚟​收集​雨水​到​水塘​嘅​設​施
    catchwater
Definitions (Wiktionary)
  1. noun, Hong-Kong
    catchwater