Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Language: French
Origin: bastille 'strong building, castle', from Old Provençal bastida, from bastir 'to build'

bastion

noun
     
Related topics: Architecture, Buildings
bas‧ti‧on [countable]
1 something that protects a way of life, principle etc that seems likely to change or end completely
bastion of
These clubs are the last bastions of male privilege.
2PM a place where a country or army has strong military defences:
Pearl Harbor was the principal American bastion in the Pacific.
3TBBAA technical a part of a castle wall that sticks out from the rest

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