strongroom

or strong room

[strawng-room, -roo m, strong-]

noun

a fireproof, burglarproof room in which valuables are kept.

Origin of strongroom

First recorded in 1755–65; strong + room

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for strongroom

Historical Examples of strongroom

Mapfabvisheen had trodden softly from the strongroom and thought himself safe.
Rastignac the Devil
Philip Jos Farmer

British Dictionary definitions for strongroom

strongroom

noun

a specially designed room in which valuables are locked for safety

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