a country or territory ruled by a king or queen
The ancient desert kingdom built towering palaces of red sandstone.
Tourists flock to the island kingdom every summer to watch its colorful parades.
✦ Old English cyningdōm “the territory ruled by a king”, from cyning “king” + -dōm “domain, condition”.
a domain, sphere, or area where someone or something has complete control or influence
The kitchen was her personal kingdom, and no one dared move a single pan.
In the tech kingdom of Silicon Valley, creativity rules over tradition.
in biology, one of the highest groups into which living things are classified, such as animals or plants
Students learned that fungi belong to their own kingdom.
The scientist proposed creating a new kingdom for certain microbes.
