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Jyutping ngam3 dou6
Pinyin àn dào

Definitions (Wiktionary)
  1. noun
    secret passage; secret tunnel

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Jyutping am3 dou6
Pinyin àn dào

Definitions (粵典–words.hk)
  1. 名詞
    隱​蔽​嘅​通道​(​量​詞​:​條​)
    secret passage
    • 呢度有條暗道可以通去外面。
      呢度有条暗道可以通去外面。
      There's a secret passage here that connects to an exit.
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

暗道 [--]

Jyutping
Pinyin àn dào

Definitions (CC-CEDICT)
  1. secret passage; secret tunnel
Examples (粵典–words.hk)
  1. Cantonese
    呢度有条暗道可以通去外面。
    呢度有條暗道可以通去外面。
    • There's a secret passage here that connects to an exit.