linchpin
英['l?n(t)?p?n]
美['l?nt?p?n]
英英釋意
- 1. 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"
- 2. pin inserted through an axletree to hold a wheel on
