fortress

A well-built and well-defended fortress.

A fortress so strong that it cannot be defeated or captured.

A fortress that cannot be entered or passed through.

A fortress built of stone.

Refers to a large and impressive fortress.

A fortress that looks forbidding and unwelcoming.

The defensive walls of a fortress.

A city that is heavily fortified like a fortress.

A town that is heavily fortified like a fortress.

The fortress is captured by an enemy.

Used to indicate location inside a fortress.

To begin fighting to capture the fortress.

To capture or gain control of a fortress.

To construct a fortress.

To maintain control and defend a fortress.

To surround a fortress with an army to force its surrender.

To take control of a fortress and station troops there.

A more formal way of saying to besiege a fortress.