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safety lock

a lock designed to prevent picking.
safety (def 4).
Origin of safety lock
1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for safety-lock
Historical Examples
  • When the firing is stopped be sure to turn on the safety-lock.

  • To bribe the guard was foolhardy because the guard did not know the combination of the safety-lock.

    The Unpublishable Memoirs A. S. W. Rosenbach
  • Some one, a woman I believe, has correctly defined it as "the safety-lock upon the property of the people."

  • It had to be slid sideways for a quarter of an inch, a safety-lock feature.

    The Blue Ghost Mystery Harold Leland Goodwin
  • The bore is made of any rifle calibre for any small-arm ammunition, and is fitted with a safety-lock.

    The Romance of Modern Invention Archibald Williams

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