Fortification work in the shape of a crown; also, work involving the making or design of crowns.
From 'crown' + 'work.' In military architecture, a 'crown work' is a type of bastion or fortification with a distinctive crown-like shape when viewed from above.
Medieval fortifications had poetic geometric names—a crown work, a star fort—and these designs weren't just pretty; they were calculated to maximize firepower and defense!
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