noun
- an artificial mound or embankment, especially one built for defensive purposes in ancient times
Usage: historical; archaeology
Examples
- The Roman agger formed part of the city’s defensive wall system.
- Archaeologists discovered the remains of an ancient agger near the settlement.
- The agger was constructed using earth and stone to create a barrier.
- Traces of the medieval agger can still be seen in the landscape.
- The defensive agger protected the town from invading armies.