Orkney Islands - an archipelago of about 70 islands in the North Atlantic and North Sea off the northeastern coast of ScotlandScotland - one of the four countries that make up the United Kingdom of Great Britain and Northern Ireland; located on the northern part of the island of Great Britain; famous for bagpipes and plaids and kilts archipelago - a group of many islands in a large body of water Atlantic, Atlantic Ocean - the 2nd largest ocean; separates North and South America on the west from Europe and Africa on the east North Sea - an arm of the North Atlantic between the British Isles and Scandinavia; oil was discovered under the North Sea in 1970 |