粉竇 [－窦]

Jyutping fan2 dau3
Pinyin fěn dòu

Definitions (粵典–words.hk)
  1. 名詞、俚語、黃賭毒
    畀​人​隱蔽​咁​吸毒​嘅​地方​，​特別​係​食​白粉​，​即​係​海洛英
    drug den, a place where drugs, especially heroin are taken

粉竇 [－窦]

Jyutping fan2 dau6
Pinyin fěn dòu

Definitions (CC-CANTO)
  1. (noun) heroin den
Definitions (Kaifangcidian)
  1. 吸食毒品的場所 – 吸食毒品的场所