Rave"lin (?), n. [F.; cf. Sp. rebellin, It. revellino, rivellino; perhaps fr. L. re- again + vallum wall.] Fort.

A detached work with two embankments with make a salient angle. It is raised before the curtain on the counterscarp of the place. Formerly called demilune and half-moon.

 

© Webster 1913.

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