Definition of linchpin:
keystone, mainstay, spinal column, pillar, anchor, gumption, anchorman, rachis, guts, anchorperson, sand, grit, headstone, back, vertebral column, backbone, lynchpin, ground tackle, spine, moxie, key.
- "Tartarin of Tarascon", Alphonse Daudet.
- "Complete State of the Union Addresses from 1790 to the Present", Various.
- "The Life and Genius of Nathaniel Hawthorne", Frank Preston Stearns.