silver bullet - definition and synonyms

noun [countable] 

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/ˌsɪlvə(r) ˈbʊlɪt/
singularsilver bullet
pluralsilver bullets
  1. a solution to a complicated problem that seems very simple but is unlikely to workThis meaning is based on one submitted to the Open Dictionary by: Boris Marchenko from Russian Federation on 19/11/2015