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safety-deposit box

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noun
  1. safe-deposit box.
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Origin of safety-deposit box

First recorded in 1925–30

safe-deposit box

or safety-deposit box

noun
  1. a lockable metal box or drawer, especially in a bank vault, used for safely storing valuable papers, jewelry, etc.
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Origin of safe-deposit box

An Americanism dating back to 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018