strongroom means A strongly built room or vault where valuables may be safely stored. Lexicurio rates it Rare gem — a strength score of 81 out of 100.
noun
- A strongly built room or vault where valuables may be safely stored.“All of Sellafield is in a holding pattern, trying to keep waste safe until it can be consigned to the ultimate strongroom: the geological disposal facility (GDF), bored hundreds of metres into the Earth’s rock, a project that could cost another £53bn.”