fireproof cabinet

noun

1. a cabinet made with fire-resistant materials, designed to protect documents or valuables from fire

   B2

   countableneutral

   • "Keep the papers in the fireproof cabinet."A2
   • "The fireproof cabinet protects important documents from fire."B1
   • "The office keeps confidential records in a locked fireproof cabinet."B1
   • "After the fire, the documents in the fireproof cabinet were completely undamaged."B2