WordWeb Online

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

Derived forms: kingdoms

Type of: area, arena, country, demesne, domain, field, group, grouping, land, monarchy, orbit, sphere, state, taxon, taxonomic category, taxonomic group

Encyclopedia: Kingdom, New York