king

(noun) a male sovereign; ruler of a kingdom. Synonyms: male monarch, Rex.

(noun) a competitor who holds a preeminent position. Synonyms: queen, world-beater.

(noun) a very wealthy or powerful businessman. Synonyms: baron, big businessman, business leader, magnate, mogul, power, top executive, tycoon. Example: "An oil baron."

(noun) preeminence in a particular category or group or field. Example: "The lion is the king of beasts."

(noun) United States woman tennis player (born in 1943). Synonyms: King, Billie Jean King, Billie Jean Moffitt King.

(noun) United States guitar player and singer of the blues (born in 1925). Synonyms: King, B. B. King, Riley B King.

(noun) United States charismatic civil rights leader and Baptist minister who campaigned against the segregation of Blacks (1929-1968). Synonyms: King, Martin Luther King, Martin Luther King Jr..

(noun) a checker that has been moved to the opponent's first row where it is promoted to a piece that is free to move either forward or backward.

(noun) one of the four playing cards in a deck bearing the picture of a king.

(noun) (chess) the weakest but the most important piece.