American English

Definition of capstone noun from the Oxford Advanced American Dictionary

     

    capstone

     noun
    noun
    NAmE//ˈkæpstoʊn//
     
     
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  1. 1 the best and final thing that someone achieves, thought of as making their career or life complete This award is a fitting capstone to his career.
  2. 2a stone placed at the top of a building or wall
See the Oxford Advanced Learner's Dictionary entry: capstone