sally-port

Postern or side-gate, or a subterranean passage, between the inner and outer works of a fortification, used by defenders to sally forth. (Curl & Wilson, 2016) Photo from Fort McHenry, Baltimore, Maryland, 2024.

Postern or side-gate, or a subterranean passage, between the inner and outer works of a fortification, used by defenders to sally forth. (Curl & Wilson, 2016) Photo from Fort McHenry, Baltimore, Maryland, 2024.