atoll - an island consisting of a circular coral reef surrounding a lagoonKwajalein - World War II (January 1944); American forces landed and captured a Japanese air base Eniwetok - an atoll in the Marshall islands; site of an amphibious assault in World War II; later used by the United States to test atomic bombs Kwajalein - an atoll in the western Marshall Islands that was used as a Japanese air and naval base during World War II Midway Islands - an atoll in the Hawaiian Islands some 1300 mile northwest of Honolulu; site of an important United States naval base coral reef - a reef consisting of coral consolidated into limestone |