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| linch·pin [ línch pin ] (plural linch·pins) or lynch·pin [ línch pin ] (plural lynch·pins) |
noun |
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| Definition: |
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1. essential element: somebody or something that is an essential element in the success of something such as a team or a plan
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2. pin to stop wheel coming off: a pin placed crosswise through an axle to prevent a wheel from coming off
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| [14th century. < obsolete linch "linchpin" < Old English lynis] |
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