- 1A military stronghold, especially a strongly fortified town.More example sentences
- World War I saw the evolution of a new fortification setup combining field strongholds with fortresses.
- City walls, towers, churches, and fortresses strongly connect Estonians to the past.
- Most contemporary commanders used their troops in a slow, expensive, attritional warfare based on sieges of selected fortified cities or fortresses.
- 1.1A person or thing not susceptible to outside influence or disturbance: he had proved himself to be a fortress of moral rectitudeMore example sentences
- No nation can erect a fortress against influenza - not even the world's wealthiest country.
- A paranoid fortress mentality has unfortunately gripped the government policy makers in the most underpopulated country on earth.
- But already we pay a price, levied not in blood but in freedom, as a fortress mentality seeps into the national culture.
Middle English: from Old French forteresse 'strong place', based on Latin fortis 'strong'.