queen
n. countablen. a woman who rules a country because she was born into a royal family. You also use this for the wife of a king or for a woman who is the best at something.
n. a female monarch who rules a kingdom in her own right, or the consort of a reigning king. The term is also applied figuratively to a woman preeminent in a particular sphere or to a high-ranking piece in the game of chess.
The queen waved to the crowd from the balcony.
After the king died without a son, his eldest daughter was crowned queen of the small nation.
While the role of a constitutional queen is largely ceremonial, she remains a powerful symbol of national continuity and historical identity during times of political transition.
When used as a title before a name, it is capitalized; otherwise, it is typically lowercase unless referring to a specific, unique head of state.