Definitions
1.NounA government in which a single ruler (a tyrant) has absolute power, or this system of government; especially, one that acts cruelly and unjustly.
2.NounThe office or jurisdiction of an absolute ruler.
3.NounAbsolute power, or its use.
4.NounA system of government in which power is exercised on behalf of the ruler or ruling class, without regard to the wishes of the governed.
5.NounExtreme severity or rigour.