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safecracker

[seyf-krak-er]
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noun
  1. a person who breaks open safes to rob them.

Origin of safecracker

An Americanism dating back to 1930–35; safe + cracker
Related formssafe·crack·ing, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for safecracker

n.

also safe-cracker, 1897, from safe (n.) + agent noun from crack (v.). Originally in reference to thieves who used dynamite.

Online Etymology Dictionary, © 2010 Douglas Harper