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Keystone

usgb/ˈkiːstəʊn/Volume
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Arch StabilityPlay
The word emphasizes the importance of the central stone in maintaining an arch's integrity. SlideThe old bridge's keystone has eroded, threatening the entire structure.
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Symbol of StrengthPlay
In literature and speeches, 'keystone' may symbolize vital support or strong foundation. SlideHe is the keystone of our community, keeping us united.