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cornerstone (20 synonym found)
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Definition of cornerstone:
(n) :
a ceremonial stone set at the corner of a building, joining two exterior walls, and often inscribed with the starting and completion dates of construction, the name of the architect and owner, and other details; by extension, that which is prominent, fundamental, noteworthy, or central
"the cornerstone on the Flatiron Building is set on the Fifth Avenue facade."
Definition of cornerstone:
(n) :
a ceremonial stone set at the corner of a building, joining two exterior walls, and often inscribed with the starting and completion dates of construction, the name of the architect and owner, and other details; by extension, that which is prominent, fundamental, noteworthy, or central
"the cornerstone on the Flatiron Building is set on the Fifth Avenue facade."