Definition of queen noun from the Oxford Advanced American Dictionary

Oxford3000

queen

noun
/kwin/
 
 

female ruler

1 the female ruler of an independent state that has a royal familyto be crowned queenkings and queensthe Queen of NorwayQueen Victoria2 (also queen consort) the wife of a king

best in group

3 queen (of something) a woman, place, or thing that is thought to be one of the best in a particular group or areathe queen of fashiona movie queenVenice, queen of the Adriatic

at festival

4 a woman or girl chosen to perform official duties at a festival or celebrationthe queen of the annual Artichoke Festivala homecoming queen see also beauty queen

in chess

5 the most powerful piece used in the game of chess that can move any number of squares in any direction

in cards

6 a playing card with the picture of a queen on it

insect

7 a large female insect that lays eggs for the whole groupa queen bee
IDIOM

the uncrowned king/queen (of something)

the person considered to be the best, most famous, or most successful in a particular place or area of activity
the uncrowned kingthe uncrowned king ofthe uncrowned queenthe uncrowned queen of