• Capstone

    Full definition of capstone

    Noun

    capstone

    (plural capstones)
    1. Any of the stones making up the top layer of a wall; a coping stone
    2. A crowning achievement, culmination or finishing touch
      • 1904, Guy Wetmore Carryl, ,“You see, I’ve never had a girl friend,” I added, by way of topping the obelisk of silliness with the capstone of fatuity.
      • 1969, NASA, Success of the Apollo program has been the capstone to a series of significant accomplishments for the United States in space in a broad spectrum of manned and unmanned exploration missions and in the application of space techniques for the benefit of man.

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