We don't have synonyms for crenelations yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are crenulation, crenelation and crenellation.
(n) :
Alternative form of crenellation. [(countable, uncountable) 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) :
Alternative form of crenellation. [(countable, uncountable) 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.]