Definition - kingdom

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kingdom
  1. a monarchy with a king or queen as head of state
  2. the domain ruled by a king or queen
  3. a country with a king as head of state
  4. a domain in which something is dominant; "the untroubled kingdom of reason"; "a land of make-believe"; "the rise of the realm of cotton in the south"
  5. a basic group of natural objects
  6. the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia