The most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism.
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"Mainspring" Quotes from Famous Books ![]() ![]() — Progress and History • Various ![]() ![]() — The Orchard of Tears • Sax Rohmer ![]() ![]() — The Heart of Nature - or, The Quest for Natural Beauty • Francis Younghusband ![]() ![]() — Worldly Ways and Byways • Eliot Gregory ![]() ![]() — The Spinners • Eden Phillpotts |
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