Linchpin in a Sentence 

Definition of Linchpin  

a person/thing vital to holding something together

Examples of Linchpin in a sentence

Brushing and flossing your teeth on a regular basis is the linchpin of good oral hygiene.  
With 80 percent of the company’s sales coming from online orders, the boutique’s website was its linchpin.  
Grandmother is the linchpin of our tightknit family and holds our crew together with her love.  

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