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Cornerstone

A stone forming the base at the corner of a building.

📖 Definitions of "Cornerstone"

noun

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.
"The cornerstone on the Flatiron Building is set on the Fifth Avenue facade."
3
That which is prominent, fundamental, noteworthy, or central.
"Exceptional service is the cornerstone of the hospitality industry."

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