• synonyms

master key

See more synonyms for master key on Thesaurus.com
  1. a key that will open a number of different locks, the proper keys of which are not interchangeable.
Show More

Origin of master key

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

Related Words


Examples from the Web for master key

Historical Examples

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
Show More
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