Synonyms for Crenelated (same or very similar meaning)
WordNet sense 1 (having or resembling repeated square indentations like those in a battlement):
castellated, crenelate, embattled, battlemented, castled, crenellate, crenellated, indented
WordNet sense 2 (not plain; decorative or ornamented):
fancy
From the ODE community, based on WordNet
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