bastion has definitions from the field of military
1
[ noun ] (military) a group that defends a principle

Examples

"a bastion against corruption" "the last bastion of communism"

Used in print

(John F. Hayward, "Mimesis and Symbol in the Arts"...)

The person of the artist becomes a final bastion of meaning in a world rendered meaningless by the march of events and the decay of classical religious and philosophical systems .

Related terms

defense

2
[ noun ] a stronghold into which people could go for shelter during a battle

Synonyms

citadel

3
[ noun ] (military) projecting part of a rampart or other fortification

Related terms

fortification

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