American Dictionary

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Definition bastion in American English

bastion noun

[countable] noun
/ˈbæstʃ(ə)n/
1

an organization, community, or system that supports and defends a particular way of life, tradition, or belief

Example

Traditionally an all-male bastion, the yachting world has gradually opened to women competitors.

Example

one of the last bastions of Soviet-style communism

Synonyms and related words
2

a place where an army has strong defenses

Synonyms and related words
Definition bastion in American English