Redoubt (noun)

1. A fort or strong defensive structure.
2. A secure or protected position or location.
3. A place of refuge or retreat.

Origin:

The word 'redoubt' has its origins from the french word 'redoute', which was used to describe a fort or stronghold. the word was originally used in military contexts, but has since expanded to include other fortified structures.

Examples:

1. The castle had several redoubts that protected it from enemy attacks.
2. The mountains provided a natural redoubt for the rebels during the war.
3. The city's large parks served as redoubts for citizens seeking refuge during the riots.
4. The company's financial success provided a redoubt against future economic downturns.
5. The redoubt was the last line of defense for the army.