be curtains for
 be curtains for
   informal   : to be the end, failure, or death of (someone or something)
   It looks like it's curtains for the mayor after this election. [=the mayor will not be elected again]
   If they don't win today's game, it'll be/mean/spell curtains for their hopes of winning the championship. [=their hopes will be ended]
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 Main Entry: curtain