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Jyutping sei3 hou6
Pinyin sì hào

Definitions (Wiktionary)
  1. noun, slang
    heroin
Examples (粵典–words.hk)
  1. Cantonese
    我投咗四号。
    我投咗四號。
    ngo5 tau4 zo2 sei3 hou6.
    • I have voted for No. 4.
  2. Cantonese
    基本法系喺九零年四月四号颁布嘅。
    基本法係喺九零年四月四號頒佈嘅。
    gei1 bun2 faat3 hai6 hai2 gau2 ling4 nin4 sei3 jyut6 sei3 hou6 baan1 bou3 ge3.
    • The Basic Law was promulgated on 4th April, 1990.