1. A series of squared notches or indentations along the top of a wall or battlement, typically found on medieval fortifications.
Usage: Usually plural; refers to the defensive architectural feature consisting of alternating raised and lowered sections.
2. Any decorative or structural pattern resembling the notched top of a castle wall.
Usage: Used in architecture and design to describe ornamental features inspired by castle battlements.

Examples

• The medieval fortress was crowned with impressive castellations that allowed defenders to shoot arrows while remaining protected.
• The architect added decorative castellations to the roofline of the Victorian mansion.
• The castle's castellations were silhouetted against the evening sky.
• Modern buildings sometimes incorporate castellations as a nod to historical fortress design.
• The stone castellations along the ancient wall had weathered centuries of rain and wind.