Definition of fulcrum noun from the Oxford Advanced American Dictionary

     

    fulcrum

     noun
    noun
    NAmE//ˈfʊlkrəm//
     
    , NAmE//ˈfʌlkrəm//
     
    , NAmE//ˈfʌlkrəm//
     
    (pl. fulcrums or fulcra
    NAmE//ˈfʊlkrə//
     
    , NAmE//ˈfʌlkrə//
     
    )
     
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  1. 1(physics) the point on which a lever turns or is supported
  2. 2[usually singular] the most important part of an activity or a situation the fulcrum of the whole debate There was a fulcrum point when the arguments tipped decidedly in one direction.
See the Oxford Advanced Learner's Dictionary entry: fulcrum