cornerstone

Meaning

  1. A stone forming the base at the corner of a building.
  2. Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other details.
  3. (figuratively) That which is prominent, fundamental, noteworthy, or central.

Frequency

22k
Etymology

In summary

From Middle English corner ston; equivalent to corner + stone. The figurative sense is in part after Psalm 118:22, and is also quoted several times in the New Testament.

Notes

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