all for nought; unprofitable (often used in gambling)
Definitions (粵典–words.hk)
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)
verb, Cantonese
to do something but end up in vain