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Jyutping sik6 baak6 gwo2
Pinyin shí bái guǒ

Definitions (CC-CANTO)
  1. all for nought; unprofitable (often used in gambling)
Definitions (粵典–words.hk)
  1. 動詞、俚語
    冇​收​穫​,​白做
    to have put in the effort but fail to reap the rewards; to do something in vain; literally: to eat gingko
    • C朗拿度連續兩場食白果,外國啲報紙笑佢係「朗零度」。
      C朗拿度连续两场食白果,外国啲报纸笑佢系「朗零度」。
      si1 long5 naa4 dou6 lin4 zuk6 loeng5 coeng4 sik6 baak6 gwo2, ngoi6 gwok3 di1 bou3 zi2 siu3 keoi5 hai6 long5 ling4 dou6.
      C. Ronaldo has not scored a goal in two games. Foreign newspapers ridicule him as "Ronulldo".
Definitions (Wiktionary)
  1. verb, Cantonese
    to do something but end up in vain
Definitions (Kaifangcidian)
  1. 輸光 – 输光
  2. 交白卷
  3. 一事無成 – 一事无成
  4. 毫無收穫 – 毫无收获
Examples (粵典–words.hk)
  1. Cantonese
    食白果
    食白果
    sik6 baak6 gwo2
    • to do something in vain
  2. Cantonese
    C朗拿度连续两场食白果,外国啲报纸笑佢系「朗零度」。
    C朗拿度連續兩場食白果,外國啲報紙笑佢係「朗零度」。
    si1 long5 naa4 dou6 lin4 zuk6 loeng5 coeng4 sik6 baak6 gwo2, ngoi6 gwok3 di1 bou3 zi2 siu3 keoi5 hai6 long5 ling4 dou6.
    • C. Ronaldo has not scored a goal in two games. Foreign newspapers ridicule him as "Ronulldo".