kingdom

noun

1.
a domain in which something is dominant
2.
a country with a king as head of state
3.
the domain ruled by a king or queen
Derived from:
king
4.
a monarchy with a king or queen as head of state
Derived from:
king
5.
the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia
6.
a basic group of natural objects