panic room
US /ˈpæn.ɪk ˌruːm/
UK /ˈpæn.ɪk ˌruːm/
1.
a room in a house or building that is designed to be very secure, often with reinforced walls and a separate ventilation system, to provide a safe haven for occupants during an emergency or home invasion
:
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The wealthy businessman had a hidden panic room in his mansion.
•
During the earthquake, they took shelter in the specially constructed panic room.