1An island in the Indian Ocean 350 km (200 miles) south of Java, administered as an external territory of Australia since 1958; population 1,400 (est. 2009).
2
former name (until 1981) for Kiritimati
Definition of Christmas Island in US English:
Christmas Island
proper noun
1An island in the Indian Ocean, 200 miles (350 km) south of Java, administered as an external territory of Australia since 1958; population 1,400 (est. 2009).