king-in-council \ˈ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷\noun (pluralkings-in-council) Usage: often capitalized K&C : the British monarch acting with the advice and consent of the privy council usually as a formal means of giving legal effect to cabinet decisions < executive decisions are reached by the king-in-council >