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Variant of linchpin.
a variant spelling of linchpin
1. a pin inserted through the end of an axletree to keep the wheel on.
2. something that holds the various elements of a complicated structure together.
[1350–1400; alter. of Middle English lynspin <lyns, Old English lynis linchpin (c. Old Saxon lunisa, Middle High German luns(e))]
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|Noun||1.||lynchpin - a central cohesive source of support and stability; "faith is his anchor"; "the keystone of campaign reform was the ban on soft money"; "he is the linchpin of this firm"|
support - something providing immaterial assistance to a person or cause or interest; "the policy found little public support"; "his faith was all the support he needed"; "the team enjoyed the support of their fans"
|2.||lynchpin - pin inserted through an axletree to hold a wheel on|
pin - a small slender (often pointed) piece of wood or metal used to support or fasten or attach things