Of or relating to a bastion or bastions; fortification-related or resembling a bastion in form or function.
Derived from bastion with the adjective-forming suffix -ary. This creates an adjective describing things that pertain to or resemble bastions or fortified structures.
Bastionary architecture evolved during the Renaissance when military engineers realized that the old high castle walls were vulnerable to cannon fire—the lower, angled bastions could house guns and withstand bombardment.
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