definition of
kingdom

[1] #1 kingdom n. [land, realm] 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". wn

[2] #2 kingdom n. a country with a king as head of state. wn

[3] #3 kingdom n. [realm] the domain ruled by a king or queen. wn

[4] #4 kingdom n. a monarchy with a king or queen as head of state. wn

[5] #5 kingdom n. the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia. wn