n.
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
4.a monarchy with a king or queen as head of state
5.one of seven biological categories: Monera or Protoctista or Plantae or Fungi or Animalia
6.a basic group of natural objects
Idiom of the Day
keep up with (someone or something)
to go at the same speed as a person or thing, to maintain the same rate of progress as someone or something
It is difficult for the boy to keep up with the rest of the class.