To enclose or surround with a wall or walls; to wall in completely.
From Latin circum- (around) + murare (to wall, from murus meaning wall). The verb literally means to build walls around something, creating a fortified enclosure.
Medieval castle builders were essentially circummuring their towns—surrounding them with massive stone walls to keep enemies out. The word fell out of fashion, but it perfectly describes one of humanity's oldest defensive strategies that shaped how cities developed.
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