Definition

Noun: 1. A pin inserted through an axletree to hold a wheel on: A physical pin or bolt that keeps a wheel attached to an axle. 2. A central cohesive source of support and stability: The most important person or thing in a group, system, or plan, the one that holds everything together.

Usage Examples

• Literal (less common):
• Figurative (common):
• Figurative (common):

Advanced Usage

• "to act as the lynchpin": To serve as the central, indispensable element.
  • His diplomatic skills acted as the lynchpin in the peace negotiations.
• "to be the lynchpin of/for something": To be the crucial supporting element for a specific thing.
  • This trade agreement is the lynchpin for the region's economic growth.

Variants and Related Words

• Linchpin: This is an equally common and correct alternative spelling. "Lynchpin" and "linchpin" are used interchangeably.
• Keystone (noun): The central stone at the summit of an arch, locking the others in place; used figuratively like "lynchpin."
• Anchor (noun): A person or thing that provides stability or confidence; a central point of support.
• Mainstay (noun): A person or thing on which something else is based or depends.

Synonyms

• Cornerstone
• Foundation
• Pillar
• Hub
• Centerpiece

Related Idioms and Phrases

• "Hold everything together": This phrase describes the function of a lynchpin.
  • Her leadership is what holds everything together; she's the true lynchpin of the team.

Noun

1. pin inserted through an axletree to hold a wheel on
2. 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