King (horse) definition

(1) (chess) the weakest but the most important piece

(2) One of the four playing cards in a deck bearing the picture of a king

(3) 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

(4) A very wealthy or powerful businessman

"An oil baron"

(5) A male sovereign; ruler of a kingdom

(6) A competitor who holds a preeminent position

(7) United States charismatic civil rights leader and Baptist minister who campaigned against the segregation of Blacks (1929-1968)

(8) United States guitar player and singer of the blues (born in 1925)

(9) United States woman tennis player (born in 1943)

(10) Preeminence in a particular category or group or field

"The lion is the king of beasts"