linchpin
linch
ˈlɪnʧ
linch
pin
ˌpɪn
pin
/lˈɪnt‍ʃpɪn/

Definition & Meaning of "linchpin"in English

Linchpin
01

pin inserted through an axletree to hold a wheel on

02

a crucial element that holds something together or provides stability and support

Examples
The linchpin of the team's defense, the goalkeeper made critical saves to secure victory.
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