An outwork consisting of an outer bailey provided with flanking towers, which was used to defend the main gate of a; fortified town, castle or the approaches of a bridge situated before a fortification. Normally projecting from the main entrance, the shape of which was dictated by the site and the design used. One type consisted of two walls parallel to each other projecting from the main gateway with another gateway situated at the other end; the first gate was flanked by towers which were provided with battlements, arrow slits and machicolations. Also known as a forecourt. See forework. (O.Fr. barbacane).
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