(n) :
Alternative form of demilune. [(military, architecture) A fortification constructed beyond the main ditch of a fortress, and in front of the curtain between two bastions, intended to defend the curtain; a ravelin.]
(n) :
Alternative form of demilune. [(military, architecture) A fortification constructed beyond the main ditch of a fortress, and in front of the curtain between two bastions, intended to defend the curtain; a ravelin.]