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  1. cor·ner·stone
    IPA[ˈkôrnərˌstōn]
  2. noun

    • 1. an important quality or feature on which a particular thing depends or is based:

      a national minimum wage remained the cornerstone of policy
    • 2. a stone that forms the base of a corner of a building, joining two walls.

  3. Variation

    • n.: noun: cornerstone, plural noun: cornerstones

    • noun

      an important quality or feature on which a particular thing depends or is based:

      a stone that forms the base of a corner of a building, joining two walls.

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