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Jyutping tou4 gu2 zeng2
Pinyin tāo gǔ jǐng

Definitions (CC-CANTO)
  1. to marry a wealthy widow for her money; to have an affair with a wealthy old woman for her money [colloquial]
Definitions (粵典–words.hk)
  1. 動詞、俚語
    指​男性​為​咗​對​方​嘅​身家​,​同上​咗​年​紀​嘅​女性​發生關​係
    to have a love affair with an older woman because of her riches; literally: to dredge an ancient well
    • 佢得嗰三十幾歲人,同個大自己廿年嘅女人一齊,唔係淘古井係咩啊?
      佢得𠮶三十几岁人,同个大自己廿年嘅女人一齐,唔系淘古井系咩啊?
      keoi5 dak1 go2 saam1 sap6 gei2 seoi3 jan4, tung4 go3 daai6 zi6 gei2 jaa6 nin4 ge3 neoi5 jan2 jat1 cai4, m4 hai6 tou4 gu2 zeng2 hai6 me1 aa3?
      He's only thirty something and he's having an affair with a woman twenty years his senior. If not her money, why else would he date her?
  2. 參看
    淘古井