country comprising this island & nearby islets: a former British colony, it became a state of Malaysia (1963-65) & an independent republic & member of the Commonwealth (1965): 248 sq mi (642 sq km); pop. 2,930,000
its capital, a seaport on the S coast: pop. 4,018,000
channel between Singapore & a group of Indonesian islands to the south: 65 mi (105 km) long