Monarch

(mōn'ark), n. [Fr. monarque, It. & Sp. monarca, Lat. monarcha, Gr. μονάρχης, μόναρχος, from μόνος, alone, and ἄρχειν, to be first, to rule, govern.]

1Sense 1. A sole ruler; one possessing supreme and undivided power; an autocrat; a sovereign; the highest ruler; an emperor, king, prince, or chief.

“He who reigns Monarch in heaven.” Milton.

2Sense 2. One superior to all others of the same kind; as, an oak is called the monarch of the forest; a lion, the monarch of wild beasts.

3Sense 3. A president, presiding genius, or patron deity. “Bacchus, monarch of the vine.” Shak.