Bastion (Bastjun): It is part of the fortification projecting outwards from the main walls. It was designed to enable the garrison to defend the perimeter walls. The original bastions had a cylindrical form however the Italian school of military engineers in the 16th century developed the polygonal (pentagonal) bastion
Castrum: A term originally used for Roman Castle but later used to refer to Medieval Castles, Forts and Fortified Towns. Kasr is the Arabic form of castle.
Cavalier (Kavallier): A raised platform built over the main defensive walls designed to mount artillery and to gain advantage from its height
Embrasure: An opening in the parapet to allow the guns to be fired without exposing the guncrew
Enceinte: The fortified perimeter of defensive work and the area contained by it.
Escutcheon: A shield were the coat of arms was engraved.
Gate, Main: The Main Entrance to a fortified place area.
Magazine: (Polverista): The gun powder magazine of the fortress.
Polygonal Fortifications :
Redan: A v-shaped wall on the land front of