Definition of third time is a charm or British third time lucky in English:

third time is a charm (or British third time lucky)

Used to express the hope that, after twice failing to accomplish something, one may succeed in the third attempt.
More example sentences
  • They will be hoping to make it third time lucky against Oulton having already lost to them twice this season, away in the league and at home in the Challenge Cup.
  • The Knights will be hoping it's third time lucky against Doncaster next Sunday having already played them twice this season.
  • A leading York Liberal Democrat is hoping to make it third time lucky and become the city's MP at the next general election.
See parent entry: third

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Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
cause (someone) to lose confidence or hope