noun

fortress

fortress, stronghold, fort

The castle was an impregnable fortress.

The castle was an impregnable fortress.

The team turned their stadium into a fortress.

The team turned their stadium into a fortress.

an impregnable/strong fortress The castle was an impregnable fortress.

to turn ((sth.)) into a fortress The team turned their stadium into a fortress.

Synonyms: stronghold, castle, citadel, fort

From Old French 'forteresse', based on Latin 'fortis' (strong).

A 'fort' is a strong place. The '-ress' suffix often denotes something larger or more impressive, so a fortress is a large fort.

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