Sunda Strait
noun
a strait between Sumatra and Java, connecting the Java Sea and the Indian Ocean. 20–65 miles (32–105 km) wide.
British Dictionary definitions for sunda strait
Sunda Strait
noun
a strait between Sumatra and Java, linking the Java Sea with the Indian Ocean. Narrowest point: about 26 km (16 miles)
Former spelling: Soenda Strait