Noun
a chamber (often underground) reinforced against bombing and provided with food and living facilities; used during air raids
Source: WordNetair raid shelter
A differing account stated that Freisler "was killed by a bomb fragment while trying to escape from his law court to the air-raid shelter", and he "bled to death on the pavement outside the People's Court at Bellevuestrasse 15 in Berlin." Source: Internet
Hearing the air-raid sirens Freisler hastily adjourned the court and ordered that the prisoners before him be taken to an air-raid shelter, but paused himself to gather files before following. Source: Internet