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mainspring

Pronunciation:  'meyn`spring

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WordNet Dictionary
 
 Definition: [n]  the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism
 
 See Also: clockwork, spring

 

 

Webster's 1913 Dictionary
 
 Definition: 
\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.

 
Thesaurus Terms
 
 Related Terms: ambition, aspiration, basis, calling, cause, consideration, font, fount, fountain, fountainhead, goal, ground, guiding light, guiding star, headspring, headstream, headwater, ideal, inspiration, intention, lodestar, matter, mine, motive, principle, quarry, reason, riverhead, sake, score, source, spring, springhead, ulterior motive, vocation, well, wellhead, wellspring
 

 

 

 

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