a secret room in a building where people can go to protect themselves when in danger

The house has a panic room that is protected by a four-inch-thick steel door. 房里装有一间由四英寸厚钢门防护的应急密室。

Worried football stars are installing panic rooms in their homes following a series of high-profile burglaries. 鉴于发生了一连串大肆渲染的盗窃案，不放心的足球明星都在家里安装了安全密室。