Definition of cornerstone

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  • cornerstone is a valid Scrabble US word with a point value of 13
  • cornerstone is a valid Scrabble UK word with a point value of 13
  • cornerstone is a valid Words with friends word with a point value of 16

Definition of cornerstone

  • the fundamental assumptions from which something is begun or developed or calculated or explained (noun)

    Synonyms

    1. base
    2. basis
    3. foundation
    4. fundament
    5. groundwork
  • a stone at the outer corner of two intersecting masonry walls (noun)
  • a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies (noun)

See definition of cornerstone in Merriam Webster