Definitions
1.verbTo regulate, be in charge of, make decisions for, reign over.
2.verbTo excel."This game rules!"
3.verbTo mark (paper or the like) with rules (lines).
4.verbTo decide judicially.
5.verbTo establish or settle by, or as by, a rule; to fix by universal or general consent, or by common practice.
6.verbTo revel.
7.nounAn order or a decision on a point of law from someone in authority.
8.adjectiveThat rules; predominant; chief; reigning; controlling."a ruling passion"