Mainspring
Related Definitions
[n] the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism
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