Search Result for "ravelin": 

The Collaborative International Dictionary of English v.0.48:

Half-moon \Half"-moon`\ (-m[=oo]n`), n. 1. The moon at the quarters, when half its disk appears illuminated. [1913 Webster] 2. The shape of a half-moon; a crescent. [1913 Webster] See how in warlike muster they appear, In rhombs, and wedges, and half-moons, and wings. --Milton. [1913 Webster] 3. (Fort.) An outwork composed of two faces, forming a salient angle whose gorge resembles a half-moon; -- now called a ravelin. [1913 Webster] 4. (Zool.) A marine, sparoid, food fish of California (C[ae]siosoma Californiense). The body is ovate, blackish above, blue or gray below. Called also medialuna. [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

Ravelin \Rave"lin\ (r[a^]v"l[i^]n; 277), n. [F.; cf. Sp. rebellin, It. revellino, rivellino; perhaps fr. L. re- again + vallum wall.] (Fort.) A detached work with two embankments which make a salient angle. It is raised before the curtain on the counterscarp of the place. Formerly called demilune and half-moon. [1913 Webster]