n. The skills needed to rule effectively as a king.
the GNU version of the Collaborative International Dictionary of English
n. The craft of kings; the art of governing as a sovereign; royal policy.
The Century Dictionary and Cyclopedia
n. The craft or occupation of kings; the art of kingly government; royal polity or policy.
Word Usage
"At that early age she was already a wife, victim of a political marriage which, in the exercise of the ponderous cunning he called kingcraft, King James had been at some pains to arrange."