The male monarch or ruler of an empire.
A large, relatively valuable marble in children's games.
Any of various butterflies of the subfamily Charaxinae.
Specifically, the ruler of the Holy Roman Empire; the world-monarch.
Any of various large dragonflies of the cosmopolitan genus Anax.
An emperor penguin.
The fourth trump or major arcana card of the tarot deck.
Any monarch ruling an empire, irrespective of gender, with "empress" contrasting to mean the consort of an emperor.
Any fish of the family Lethrinidae.
A male monarch; a man who heads a monarchy. If it is an absolute monarchy, then he is the supreme ruler of his nation.
Something that has a preeminent position.
The central pin or skittle in bowling games.
A playing card with the letter "K" and the image of a king on it, the thirteenth card in a given suit.
A male dragonfly; a drake.
A king skin.
A powerful or majorly influential person.
The principal chess piece, that players seek to threaten with unavoidable capture to result in a victory by checkmate. It is often the tallest piece, with a symbolic crown with a cross at the top.
A checker (a piece of checkers/draughts) that reached the farthest row forward, thus becoming crowned (either by turning it upside-down, or by stacking another checker on it) and gaining more freedom of movement.
A king-sized bed.
The monarch with the most power and authority in a monarchy, regardless of sex.
A vertex in a directed graph which can reach every other vertex via a path with a length of at most 2.
To assume or pretend preeminence (over); to lord it over.
To rule over as king.
To promote a piece of draughts/checkers that has traversed the board to the opposite side, that piece subsequently being permitted to move backwards as well as forwards.
To crown king, to make (a person) king.
To perform the duties of a king.
To dress and perform as a drag king.