Fortif. Formerly crowned work. See quots.
1677. Lond. Gaz., No. 1179/2. The Town having a large Hornwork with a Halfmoon on each side of it, and a crowned Work before it, all facd with Stone and Brick. Ibid., No. 1181/4. Retiring into an Half-moon faced with Brick, which was in the middle of the said Crowned work.
1678. trans. Gayas Arms War, II. 115. Couronnement, or a Crown-work, is a Work made beyond the Horns to gain Ground, and force off the Enemies.
1859. F. A. Griffiths, Artil. Man. (ed. 9), 262. A Crown-work is composed of a bastion between two curtains terminated by half bastions. It is joined to the body of the place by two long sides.