Definitions for "CRENELLATION"
See Battlements
A tooth-shaped series of projections on top of a castle or fort. Technically, the "teeth" are called merlons, and the crenellations are the spaces in between.
a rampart built around the top of a castle with regular gaps for firing arrows or guns
Indented; notched.
a repeating pattern created by the removal of metal usually notches, scallops, or fleur de lis