Meaning & use
Fortress
Last updated
A large, strongly built structure designed for military defense; figuratively, anything heavily protected or secure.
See it in a sentence
The medieval fortress withstood countless sieges over the centuries.
The company's headquarters felt like a fortress with its layers of security.
A note on using this word
Often used metaphorically to describe something that is well-defended or impregnable, not just literal military structures.
Words with a similar meaning
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