lynchpinnoun · Level 3 SAT1a central cohesive source of support and stabilityThe veteran diplomat served as the lynchpin of the fragile coalition for over a decade.ModuleLevel 3Registeracademic, argument, toneCollectionCollection 016SAT Complete planAlso in Collection 016inebriate, intemperance, demagog, misogynism, averment, foreboding, alimentation, keystone and 1 more