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linch·pin
 linchpin
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- pronunciation:
- lInch
pIn
- features:
- Word Combinations (noun)
| part of speech: |
noun |
| definition 1: |
a locking pin inserted through the end of a shaft to hold a wheel or other moving part.
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| definition 2: |
a person, policy, element, or the like that is crucial to the working of an organization or plan.
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