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n. 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.

n. The act of crenellating; adding a top row that looks like the top of a medieval castle.

n. the action of constructing ramparts with gaps for firing guns or arrows

n. a rampart built around the top of a castle with regular gaps for firing arrows or guns

"There is also mehrab, the niche where the Imam, or priest, leads the prayer and crenellation, which is the decoration on the top of the mosque."

building    construction    rampart    wall    bulwark    battlement   

crenellate    crenel    licence to crenellate   

pooping    daylighting    lightbulb    green-black    honking    Waldo    shafting    vocoder    stickin    conveyer