linchpin

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++linch·pin, lynchpin /ˈlɪntʃˌpɪn/ noun  the linchpin of something MAINthe person or thing in a group, system etc that is most important, because everything depends on them 〔团体、制度等的〕关键人物[事物]

Examples from the Corpus

linchpin• Divas are often the financial linchpins for opera productions costing hundreds of thousands of dollars.• Dalton Baldwin's linchpin accompaniments are all that one could hope for in terms of grace and humour.• Apparently she accepted that she was the primary caretaker of her children and the linchpin of family life.• Removing the middle would be like removing the linchpin.• Erme was the linchpin of the whole thing.• Consumer goods industries were the linchpin, and these were overwhelmingly located in the West Midlands and in and around Greater London.From Longman Business Dictionarylinchpinlinch‧pin /ˈlɪntʃˌpɪn/ (also lynchpin) noun [singular] the most important thing or person in a system, plan etc, which everything else depends onThe consumer is the linchpin of the economy.Origin linchpin (1300-1400) linch “pin fastening a wheel to an axle” ((11-16 centuries)) (from Old English lynis) + pin

linch·pin nounChineseSyllable  

etc Business thing group, Corpus the or person in system a

linchpin
linch‧pin , lynchpin /ˈlɪntʃˌpɪn/ nounthe linchpin of something the person or thing in a group, system etc that is most important, because everything depends on them

linch·pin (also lynch·pin) BrE /ˈlɪntʃpɪn/ 🔊NAmE /ˈlɪntʃpɪn/ 🔊 nouna person or thing that is the most important part of an organization, a plan, etc., because everything else depends on them or it （组织、计划等的）关键人物，关键事物