Black's Law Dictionary (2nd edition)dictionaries

King

The sovereigu, ruler, or chief ex-ecutive magistrate of a state or nation whose constitution is of the kind called “monarchi-cal” is thus named if a man; if it be a woman, she is called “queen.” The word ex-presses the idea of one who rules singly over a whole people or has the highest execu-tive power; but the office may be either hereditary or elective, aud the sovereignty of the kiug may or may not be absolute, accord-ing to the constitution of the country

Source: Black’s Law Dictionary 2nd Ed (1910)