隧洞 [－－]

Jyutping seoi6 dung6
Pinyin suì dòng

Definitions (CC-CEDICT)
  1. tunnel
Definitions (Wiktionary)
  1. noun
    tunnel (underground or underwater passage)
    (syn.) 坑道, 暗窿, 巷道, 地下道, 地道, 磅空, 隧道
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）