Definition of — or bust in English:

— or bust

phrase

informal
  • Used to indicate that a supreme effort will be made to achieve the stated goal, with utter failure as the only alternative.

    ‘it's gold medal or bust for both of our basketball teams’
    ‘tomorrow's game is quite simply win or bust for both teams’
    • ‘He admitted to thinking it was all or bust after losing the 192 points from the Queensland round.’
    • ‘Unfortunately, the industry has adopted the unsustainable "blockbuster or bust" business model.’
    • ‘This game had been billed as win or bust.’
    • ‘It looked like a case of promotion or bust.’
    • ‘After a year of programming, he decided it was Wall Street or bust.’