In fortification: an indented parapet, formed by a series of rising members called cops or merlons, separated by openings called crenelles or embrasures, the soldier sheltering himself behind the merlon while he fires through the embrasure or through a loophole in the battlement.
The towering roof of heaven.
Any high wall for defense.
A square protected by a pawn that is in or near the enemy's stronghold.
A military post stationed at a distance from the main body of troops.
An outlying settlement.
The body of troops manning such a post.