Added 9 October 2026 britain noun Categories: PlacesEveryday Words noun ! Definition from WordNet 3.1, Princeton University. More about britain at Wordnik → Where our words come from → A monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom. Related Words: ukbritishbritenglishangliabritonenglandbretonkingdombritannia Back to today's word