• synonyms


  1. an act or instance of becoming unalterable, unmovable, or rigid.
  2. commitment, binding, or restriction.
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Origin of lock-in

First recorded in 1965–70; noun use of verb phrase lock in
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lock-in

Contemporary Examples

Historical Examples

  • To every appeal they heartlessly refused to divulge the key to the lock-in.

    Meeting of the Board

    Alan Edward Nourse

British Dictionary definitions for lock-in


  1. an illegal session of selling alcohol in a bar after the time when it should, by law, be closed
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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