locknut Hear it!

locknut definition

lock·nut (-nut′)

noun

  1. a thin nut screwed down hard on an ordinary nut to prevent the latter from working loose
  2. a specially designed nut that locks itself when screwed down tight
    also lock nut

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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