
Fort
Historical Use
The term has a military origin, usually referring to a secure place for troops.

The ancient fort had walls thick enough to withstand sieges.
Figurative Sense
Sometimes used to imply that someone is defensive or hard to approach emotionally.

He put up a fort around his heart after the breakup.
Cultural Heritage
Forts can be historic landmarks and tourist attractions today.

We visited the fort, which has been a museum for a century.
Compare with
BastionBlockhouseBulwarkCastleCitadelFortressKeepRedoubtStronghold
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