برون‌بارو

Also known as surrounding wall, enclosure wall

300px|thumb|Enceinte of Khotyn Fortress in [[Ukraine.]] thumb|300px|The keep of [[Château de Vincennes protected by its own isolated enceinte.]] thumb|300px|Krak des Chevaliers, a concentric castle. Enceinte (from Latin incinctus "girdled, surrounded") is a French term that refers to the "main defensive enclosure of a fortification". For a castle, this is the main defensive line of wall towers and curtain walls enclosing the position. For a settlement, it would refer to the main town wall with its associated gatehouses, towers, and walls.