Great Barrier Reef
noun
a coral reef parallel to the coast of Queensland, in NE Australia. 1250 miles (2010 km) long.
Also called
Barrier Reef.
British Dictionary definitions for barrier reef
Great Barrier Reef
noun
a coral reef in the Coral Sea, off the NE coast of Australia, extending for about 2000 km (1250 miles) from the Torres Strait along the coast of Queensland; the largest coral reef in the world