United Kingdom

Short definition from Wiktionary

Proper noun

1. 1
   A kingdom and country in Northern Europe, comprising the four countries of England, Scotland and Wales on the island of Great Britain, and Northern Ireland on the northeastern portion of the island of Ireland since 1922.
2. 2
   The United Kingdom of Great Britain and Ireland (1801–1922).
3. 3
   The Kingdom of Great Britain (1707–1801).
4. 4
   A kingdom consisting of several constituencies, either actual, historical, or hypothetical.