lynchpin

• 指起关键作用、维系整体稳定的核心要素；也指穿过轴端以防车轮脱落的销子。

A noun referring to a central, cohesive source of support and stability, or a pin inserted through an axletree to hold a wheel on.

1. Central support or foundationC1formal

   A person or thing that is the most important support or stabilizing element of a group, system, or process.

   关键支撑

   • She is the lynchpin of the entire project, without whom nothing would function.
   • Trust is the lynchpin of a healthy relationship.
   • His leadership serves as the lynchpin for the company's success.

   同义词anchorbackbonebedrockcornerstonefoundationhubkeystonemainstaypillarpivot

2. Mechanical fastenerB1formaltechnical

   A pin inserted through an axle to prevent a wheel from sliding off, used in vehicles and machinery.

   开口销

   • The wheel is secured by a lynchpin through the axle.
   • He replaced the rusty lynchpin on the cart.
   • A missing lynchpin caused the wheel to detach.

   同义词cotter pin