This is the 3873rd most frequent Russian word.
бастион
"Бастион" in English means "bastion," a fortified structure or a stronghold.
Here, 'бастион' is used in its literal meaning as a projecting part of a fortification.
Этот бастион является символом крепости.
This bastion is a symbol of the fortress.
In this sentence, 'бастион' is employed metaphorically to denote a stronghold or protector of a concept.
Научное сообщество стало бастионом знаний.
The scientific community has become a bastion of knowledge.
Here, 'бастион' is used figuratively to describe an entity that upholds or defends an ideology.