From Longman Dictionary of Contemporary Englishrampartram‧part /ˈræmpɑːt $ -ɑːrt/ noun [countable usually plural] AATBBa wide pile of earth or a stone wall built to protect a castle or city in the past
Examples from the Corpus
rampart• Beyond it is a rampart of volcanoes rising to 15,000 feet.• At the very bottom of the rampart, and totally sealed by it, was a small hearth.• Reflected light shimmered upwards from the rapid water, and rippled along the stone of the ramparts.• Two-thirds of the ramparts were undefended.• They were on the ramparts with you during the battle.• The rampart shook under our weight and the ice all over the bog cracked and broke on both sides.• They spread out in front of the red brick buildings, whose ramparts produce a castle-like appearance.Origin rampart (1500-1600) French rempart, from remparer “to strengthen” 