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Etymology · Old French

crenel

3 English words descend from Old French crenel, most common first.

crenelThe space between merlons in a crenelated battlement.
crenelateTo furnish with crenelles.
crenellationA 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.