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Jyutping faan4 syun4 zai2
Pinyin fān chuán zǎi

Definitions (粵典–words.hk)
  1. 名詞、俚語
    舊時​黑​社會​對​警察​嘅​隱​喻​,​主權​移交​之前​皇家​香港​警察​嘅​警徽​入邊​有​隻​帆船​,​因而​得名
    police officer; literally "sailboat boy"
  2. 名詞、俚語
    藥物菲仕​通​嘅​俗名​(​量​詞​:​粒​)
    nickname of the drug physeptone, literally "little sailboat"

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Jyutping faan4 syun4 zai2
Pinyin fān1chuan zǐ

Definitions (CC-CANTO)
  1. a yawl; physeptone (a type of methadone) [colloquial]