King·dom n.
 1. The rank, quality, state, or attributes of a king; royal authority; sovereign power; rule; dominion; monarchy.
    Thy kingdom is an everlasting kingdom.   --Ps. cxiv. 13.
    When Jehoram was risen up to the kingdom of his father, he strengthened himself.   --2 Chron. xxi. 4.
 2. The territory or country subject to a king or queen; the dominion of a monarch; the sphere in which one is king or has control.
    Unto the kingdom of perpetual night.   --Shak.
 You're welcome,
 Most learned reverend sir, into our kingdom.   --Shak.
 3. An extensive scientific division distinguished by leading or ruling characteristics; a principal division; a department; as, the mineral kingdom.  In modern biology, the division of life into five kingdoms is widely used for classification. “The animal and vegetable kingdoms.”   --Locke.
 Animal kingdom. See under Animal.
 Kingdom of God. (a) The universe. (b) That spiritual realm of which God is the acknowledged sovereign. (c) The authority or dominion of God.
 Mineral kingdom. See under Mineral.
 United Kingdom. See under United.
 Vegetable kingdom. See under Vegetable.
 Syn: -- Realm; empire; dominion; monarchy; sovereignty; domain.

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 United Kingdom
      n : a monarchy in northwestern Europe occupying most of the
          British Isles; divided into England and Scotland and
          Wales and Northern Ireland [syn: UK, Great Britain, GB,
           Britain, {United Kingdom of Great Britain and Northern
          Ireland]