A massive, heavily fortified structure used to protect people or material from attacks, especially bombs. Bunkers are often underground or built from thick reinforced concrete.
example
Im Zweiten Weltkrieg suchten die Menschen bei Luftangriffen Schutz im Bunker.
During World War II, people sought shelter in the bunker during air raids.
Usage tips
Origin of the word
The word 'Bunker' is a loanword from English. In German, it has become established in several contexts with different meanings.
EXAMPLE
Der alte Bunker aus dem Krieg steht heute unter Denkmalschutz.
The old bunker from the war is now a listed historical monument.
Context clues
You can recognize the meaning of 'Bunker' from context. If the topic is war or protection, it means a protective structure. In a sports context, especially golf, it is a sand hazard. In an industrial context, it is a storage space for bulk goods such as coal.
EXAMPLE
Die Zivilisten flüchteten in den Bunker.
The civilians fled into the bunker.
Correct preposition
For a protective bunker, the preposition 'in' is used. Movement is expressed with the accusative ('in den Bunker' — into the bunker), while a state or location is expressed with the dative ('im Bunker' — in the bunker).
EXAMPLE
Bei dem Alarm rannten alle in den Bunker.
When the alarm sounded, everyone ran into the bunker.
Compare with
near_synonym · confusable
Bunker vs Speicher
storage / memory
'der Speicher' and 'der Bunker' can both mean a large room or container in which material is stored. In this sense, 'Bunker' is especially used for bulk goods such as coal or ore. 'Speicher' is more general and can be used for many stored goods or supplies. But importantly, 'Bunker' also very often means a heavily protected structure, for example against bombs. This can lead to confusion. If the focus is only on storage, 'Speicher' is often more neutral. 'Bunker' is more precise when you mean a special container for material or a protective structure.
Bunker
Der alte Bunker aus Beton steht noch am Rand der Stadt.
The old concrete bunker is still standing on the edge of the city.
Speicher
Im Speicher des Betriebs wird Wasser für die Produktion gesammelt.
Water for production is collected in the company's storage tank.