What is another word for crenelation?
Pronunciation: [kɹˌɛnɪlˈe͡ɪʃən] (IPA) 
Crenelation is a term used in architecture to describe the pattern of indented gaps, or "crenels," along the top edge of a wall or tower. This feature was traditionally used for defensive purposes, giving soldiers a protected space to fire weapons from. Synonyms for this term include battlement, castellation, embrasure, merlon, and rampart. Each of these words refers to a slightly different variation of the crenelation design, but all of them refer to the same basic concept of a fortified wall with protective gaps. Whether you're studying medieval castles or simply admiring the architecture of a historic building, knowing these synonyms can help you describe this distinctive feature with precision and accuracy.
