Bastion

имя существительное [военное дело] 1) бастион Синоним(ы): bulwark 2) оплот, укрепление

Большой англо-русский словарь

Bastion

noun Etymology: Middle French, from Old Italian bastione, augmentative of bastia fortress, derivative from dialect form of bastire to build, of Germanic origin; akin to Old High German besten to patch 1. a projecting part of a fortification 2. a fortified area or position 3. stronghold 2 Example: the last bastion of academic standards — American Scientistbastioned adjective

Merriam-Webster's Collegiate Dictionary