master key

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Origin of master key

First recorded in 1570–80 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for master key

opener, passkey

Examples from the Web for master key

Historical Examples of master key

British Dictionary definitions for master key

master key

  1. a key that opens all the locks of a set, the individual keys of which are not interchangeableAlso called: pass key
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012