overman

n.; pl. -men 1. One in authority over others; a chief; usually, an overseer or boss. [ Webster 1913 Suppl. ]

2. An arbiter. [ Webster 1913 Suppl. ]

3. In the philosophy of Nietzsche, a man of superior physique and powers capable of dominating others; one fitted to survive in an egoistic struggle for the mastery. [ Webster 1913 Suppl. ]