Bible Dictionaries
Ravelin

Webster's Dictionary

(n.) 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.

Bibliography Information
Webster, Noah. Entry for 'Ravelin'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​r/ravelin.html. 1828.