bastion

Words with a similar base: bastion

'bastion'

[bastion.n.01] as in: a group that defends a principle

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Examples:
a bastion against corruption
the last bastion of communism

'bastion'

[bastion.n.02] as in: a stronghold into which people could go for shelter during a battle

'bastion'

[bastion.n.03] as in: projecting part of a rampart or other fortification