noun
EXAMPLES FROM CORPUS
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Apparently she accepted that she was the primary caretaker of her children and the linchpin of family life.
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Consumer goods industries were the linchpin , and these were overwhelmingly located in the West Midlands and in and around Greater London.
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Dalton Baldwin's linchpin accompaniments are all that one could hope for in terms of grace and humour.
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Divas are often the financial linchpins for opera productions costing hundreds of thousands of dollars.
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Erme was the linchpin of the whole thing.
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Removing the middle would be like removing the linchpin .