The characteristic top of a castle wall where open spaces for shooting arrows or guns alternate with higher projections (Merlons) behind which soldiers could take shelter while reloading
A notched battlement made up of alternate crenels (openings) and merlons (square sawteeth); A parapet with alternating openings (embrasures) and raised sections (merlons), often used on castle walls and towers for defense purposes
A pattern along the top of a parapet (fortified wall), most often in the form of multiple, regular, rectangular spaces in the top of the wall, through which arrows or other weaponry may be shot, especially as used in medieval European architecture
The pattern along the top of many medieval castles, most often in the form of multiple, regular, rectangular spaces cut out of the top of the wall, through which to shoot arrows, etc