battlement
nounUK /ˈbætlmənt/
US /ˈbætlmənt/
A battlement is a low wall with gaps on top of a castle.
The knights stood behind the battlement and watched the road below.
OTHER MEANINGS
2. A notched parapet used for defense on a building.
The old church still has a battlement along its roof.
3. A protective wall or railing at the edge of a roof.
Workers repaired the battlement so no one could fall.
4. A decorative top edge shaped like castle teeth.
The toy castle had a plastic battlement around the top.