Answer: agger

AnswerCrossword Clue
AGGEREarthwork
AGGEREarthwork or mound of ancient Rome.
AGGERRoman rampart.
AGGEREarthwork of ancient Rome.
AGGERDouble tide
aggeragriculture
aggera mound of earth used as protection
agger(in ancient Roman building) an earthen mound or rampart, esp. one having no revetment
aggera. high tide in which the water rises to a certain level, recedes, then rises again b. low tide in which the water recedes to a certain level, rises slightly, then recedes again