Linchpin: Definition with Linchpin Pictures and Photos

1. Noun. A central cohesive source of support and stability. "He is the linchpin of this firm"

Exact synonyms: Anchor, Backbone, Keystone, Lynchpin, Mainstay
Generic synonyms: Support
Derivative terms: Anchor

2. Noun. Pin inserted through an axletree to hold a wheel on.

Exact synonyms: Lynchpin
Generic synonyms: Pin

1. n. A pin used to prevent the wheel of a vehicle from sliding off the axletree.

1. Noun. a pin inserted through holes at the end of an axle, so as to secure a wheel ¹

2. Noun. (figuratively) a central cohesive source of stability and security; a person or thing that is critical to a system or organisation. ¹

¹ Source: wiktionary.com

1. a locking pin inserted in the end of a shaft [n -S]

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