Topic: ARCHITECTURE
| Date: | 1500-1600 |
| Language: | French |
| Origin: | bastille 'strong building, castle', from Old Provençal bastida, from bastir 'to build' |
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bas‧ti‧on
[countable]
[countable]1 something that protects a way of life, principle etc that seems likely to change or end completely
2PM a place where a country or army has strong military defences :
Pearl Harbor was the principal American bastion in the Pacific.
Pearl Harbor was the principal American bastion in the Pacific.3TBBAA technical a part of a castle wall that sticks out from the rest

