Monarch

Part of speech: noun (n.)

1. A sole or supreme ruler; a sovereign; the highest ruler; an emperor, king, queen, prince, or chief. He who reigns Monarch in heaven, ... upheld by old repute. Milton.

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

3. A patron deity or presiding genius. Come, thou, monarch of the vine, Plumpy Bacchus. Shak.

4. A very large red and black butterfly (Danais Plexippus); -- called also milkweed butterfly.

Part of speech: adjective (a.)

Superior to others; preëminent; supreme; ruling. "Monarch savage." Pope.