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keystone

noun

1 keystone

A central cohesive source of support and stability:
— The keystone of campaign reform was the ban on soft money.

synonyms: anchor, backbone, linchpin, lynchpin, mainstay.

Roget 215: support, ground, foundation, base, basis; terra firma; bearing, fulcrum, bait [U.S.], caudex crib; point d'appui [Fr.], pou sto [Gr.], purchase footing, hold, ... show more

Roget 615: motive, springs of action, wellsprings of action.    reason, ground, call, principle; by end, by purpose; mainspring, primum mobile [Lat.], keystone; the why and the wherefore; ... show more

Roget 642: importance, consequence, moment, prominence, consideration, mark, materialness.    import, significance, concern; emphasis, interest.    greatness etc. ... show more

Roget 729: completion, accomplishment, achievement, fulfillment; performance, execution; despatch, dispatch; consummation, culmination; finish, conclusion; close etc. ... show more

Dutch: middelpunt, sleutelfiguur, spil
Polish: ostoja



2 keystone

The central building block at the top of an arch or vault.

synonyms: headstone, key.

Dutch: roos, slotstuk, sluitsteen, sluitstuk
Polish: klucz, zwornik


Moby thesaurus: apse, arcade, arcature, arch, arched roof, archway, basis, bench mark, camber, cardinal point, ceilinged roof, chief thing, climax, concameration, concha, core, cornerstone, cove, crisis, critical point ... show more.

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