atoll /ˈæˌtɔl, ˌtɑl, ˌtol, ˈe-/
環狀珊瑚島,環礁
A·toll n. A coral island or islands, consisting of a belt of coral reef, partly submerged, surrounding a central lagoon or depression; a lagoon island.
◄ ►
atoll
n : an island consisting of a circular coral reef surrounding a
lagoon