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Jyutping laam4 gwaa1 zi2
Pinyin lán guā zǐ

Definitions (粵典–words.hk)
  1. 名詞、俚語、黃賭毒
    三唑​侖​,​一​隻​成癮​性極​強​嘅​安眠​藥​,​因為​顏色​同形​狀而​得名
    triazolam; literally: blue melon seed

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Jyutping laam4 gwaa1 zi2
Pinyin lán guā1zi

Definitions (CC-CANTO)
  1. triazolam, a type of tranquiliser [colloquial]