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  1. MAINSPRING definition: 1. the most important reason for something; the thing that makes something else happen: 2. the…. Learn more.

    • English (US)

      MAINSPRING meaning: 1. the most important reason for...

  2. Definitions of mainspring. noun. the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism. see more.

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  4. Factsheet. What does the noun mainspring mean? There are three meanings listed in OED's entry for the noun mainspring. See ‘Meaning & use’ for definitions, usage, and quotation evidence. mainspring has developed meanings and uses in subjects including. clocks and watches (early 1600s) gunnery and firearms (mid 1600s) See meaning & use.

  5. May 14, 2024 · mainspring in American English. (ˈmeɪnˌsprɪŋ ) noun. 1. the principal spring in a clock, watch, or other mechanism; driving spring, whose steady uncoiling keeps the mechanism running. 2. the chief motive or cause. Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt.

  6. mainspring meaning, definition, what is mainspring: the most important spring in a watch or ...: Learn more.

  7. Definitions of 'mainspring' If you say that an idea, emotion, or other factor is the mainspring of something, you mean that it is the most important reason or motive for that thing. [written] [...] More. Pronunciations of the word 'mainspring' British English: meɪnsprɪŋ American English: meɪnsprɪŋ. More. Synonyms of 'mainspring'

  8. Mainspring definition: the principal spring in a mechanism, as in a watch.. See examples of MAINSPRING used in a sentence.

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