bolwerk
Bolwerk is a Dutch noun meaning bulwark or bastion, referring to a projecting defensive work in fortifications that provides protection and a position from which attackers can be repelled. In everyday language it can also denote a strong defensive position more generally.
Etymology and cognates: The word is of Dutch origin, combining bol (bulge or bulwark) with werk (work
Historical usage: Bolwerken formed part of medieval and early modern urban defenses in the Low Countries and
Modern and metaphorical use: In contemporary Dutch, bolwerk is often used metaphorically to describe a stronghold
See also: Bulwark, Bastion, Fortress, Fortification, Bollwerk (German cognate).