海かい岸がん段だん丘きゅうかいがんだんきゅうMeanings1nouncoastal terraceA geological landform: a flat or gently sloping surface along a coast, formed by wave erosion and uplift.この地ち域いきには海かい岸がん段だん丘きゅうが発はっ達たつしている。Coastal terraces are well developed in this region.