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linchpin
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Quick answer
As a noun, linchpin means a pin inserted through holes at the end of an axle or shaft, so as to secure a wheel or shaft-mounted device. As a verb, it means adopt as, or serve as, a central cohesive source of stability and security.
Meanings of linchpin
3 meaningsnoun
A pin inserted through holes at the end of an axle or shaft, so as to secure a wheel or shaft-mounted device.
figurativelyA central cohesive source of stability and security; a person or thing that is critical to a system or organisation.
verb
To adopt as, or serve as, a central cohesive source of stability and security.
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).
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Scrabble & Words With Friends: valid word15 points before bonuses.8 letters.
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