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lockfast

British  
/ ˈlɒkˌfɑːst /

adjective

  1. securely fastened with a lock

"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

Example Sentences

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His final conviction before he became a foster carer was theft from a lockfast place in 1978 - eight years before he began fostering.

From BBC ● Jan. 28, 2026

No wonder that she and her son never referred to what she had written and he had read in his mother’s lockfast book that never-to-be-forgotten night.

From Samuel Rutherford and some of his correspondents by Alexander Whyte

Besides what I have named, there was not another thing in that great, stone-vaulted, empty chamber but lockfast chests arranged along the wall and a corner-cupboard with a padlock.

From The Works of Robert Louis Stevenson - Swanston Edition Vol. 10 (of 25) by Robert Louis Stevenson

Julian at length called to the female,—"Catherine, bestir thee, and fetch me presently that letter which I bade thee keep ready at hand in thy casket, having no sure lockfast place of my own."

From The Monastery by Sir Walter Scott

You’ve two rifles and a pair of revolvers in the lockfast by your cabin there.

From All the Brothers Were Valiant by Ben Ames Williams

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