Britain/ˈbrɪtn/ Definition 1 of 1Pro Tip 1/3Political Entity Refers to the whole country including England, Scotland, Wales, and Northern Ireland. Britain's government announced new legislation today. Pro Tip 2/3Not Always 'Great' 'Britain' can be used alone, while 'Great Britain' specifically excludes Northern Ireland. She represented Britain in the Olympics, not just England. Pro Tip 3/3Cultural Identity Some may prefer 'British' to describe their nationality, encompassing all UK regions. The British have a rich cultural heritage.