(obsolete) Briton; British.

(loosely) The United Kingdom. / The island of Great Britain, consisting of England, Scotland and Wales, especially during antiquity. / (historical) Brittany. / (in the plural) The British Isles.

(now rare, historical) An ancient Briton.

plural of Britain

(historical or loosely) England and Wales.

(informal, derogatory) Britain (viewed as a crime-ridden state where society and common sense have failed)

(historical) The whole colonial empire of Great Britain.

Brittany

The body of medieval literature and legendary material associated with Great Britain, and sometimes Brittany, and the legendary kings and heroes associated with it, particularly King Arthur.

Synonym of Great Britain and Ireland