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mainspring |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Mainspring \Main"spring`\, n. The principal or most important spring in a piece of mechanism, especially the moving spring of a watch or clock or the spring in a gunlock which impels the hammer. Hence: The chief or most powerful motive; the efficient cause of action From WordNet r 1.6 [wn]: mainspring n : the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism
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