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Jyutping sai2 maa5 laam2
Pinyin xiǎn mǎ lǎn

Definitions (粵典–words.hk)
  1. 動詞
    指​江湖​中​人​偷走​兄弟​財物​、​侵吞公款​。​馬​檻​(​妓院​)​為​黑​社會​財政​收入​重要​來源​,​江湖​中人​做​賊​打劫​同道​金庫​,​被​江湖​中人視​為​罪大惡極​。
    to steal from the home of a friend, to take away the fund of their own organisation. Literally: to clean the horse stable. The house stable(brothel) as an important income of triad, so a triad robbing a brothel is regarded as one of the worst crime amount gangsters' community.
    • 江湖中人最忌三樣嘢,洗馬檻、着紅鞋、勾義嫂。
      江湖中人最忌三样嘢,洗马槛、着红鞋、勾义嫂。
      The triad members hates 3 crimes most : to steal from a friend, to be a informer for police, to take a friend's woman.
  2. 參看
    洗馬檻

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Jyutping sai2 maa5 laam5
Pinyin xiǎn3ma lǎn

Definitions (CC-CANTO)
  1. to embezzle funds [colloquial]