Definify.com
Webster 1913 Edition
Ravelin
Rave′lin
(răv′lĭn; 277)
, Noun.
[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
. Webster 1828 Edition
Ravelin
RAV'ELIN
, n.In fortification, a detached work with two faces which make a salient angle, without any flanks, and raised before the counterscarp, of the place. In this it differs from a half moon, which is placed before an angle.