The crossword solution for the term 'Great Britain, for one' is ISLE. Great Britain is an island nation located off the northwest coast of Europe. It is made up of England, Scotland, and Wales, and is often referred to as the United Kingdom or UK. The island is surrounded by the Atlantic Ocean, the North Sea, the English Channel, and the Irish Sea. The term 'ISLE' is used to refer to any island, but in this case it specifically refers to Great Britain.