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We found 28 dictionaries with English definitions that include the word mainspring:
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General dictionaries General (26 matching dictionaries)
  1. mainspring: Merriam-Webster.com [home, info]
  2. mainspring: Oxford Dictionaries [home, info]
  3. mainspring: American Heritage Dictionary of the English Language [home, info]
  4. mainspring: Collins English Dictionary [home, info]
  5. mainspring: Vocabulary.com [home, info]
  6. mainspring: Macmillan Dictionary [home, info]
  7. Mainspring, mainspring: Wordnik [home, info]
  8. mainspring: Cambridge Advanced Learner's Dictionary [home, info]
  9. mainspring: Wiktionary [home, info]
  10. mainspring: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. mainspring: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. mainspring: Infoplease Dictionary [home, info]
  13. Mainspring, mainspring: Dictionary.com [home, info]
  14. mainspring: UltraLingua English Dictionary [home, info]
  15. Mainspring (novel), Mainspring, The Mainspring: Wikipedia, the Free Encyclopedia [home, info]
  16. Mainspring: Online Plain Text English Dictionary [home, info]
  17. mainspring: Webster's Revised Unabridged, 1913 Edition [home, info]
  18. mainspring: Rhymezone [home, info]
  19. Mainspring: AllWords.com Multi-Lingual Dictionary [home, info]
  20. mainspring: Free Dictionary [home, info]
  21. mainspring: Mnemonic Dictionary [home, info]
  22. mainspring: WordNet 1.7 Vocabulary Helper [home, info]
  23. mainspring: LookWAYup Translating Dictionary/Thesaurus [home, info]
  24. mainspring: Dictionary/thesaurus [home, info]

Business dictionaries Business (1 matching dictionary)
  1. mainspring: Legal dictionary [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. mainspring: Encyclopedia [home, info]

(Note: See mainsprings for more definitions.)

Quick definitions from Macmillan (
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Quick definitions from WordNet (mainspring)

noun:  the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism

▸ Also see mainsprings

Words similar to mainspring

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Phrases that include mainspring:   the mainspring

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