A surname.

simple past tense and past participle of rule on

present participle of rule on

(programming) A rule by which compilers are allowed to apply any optimizing transformation to a program provided that it makes no change to the observable behavior of the program.

(transitive, stative) To regulate, be in charge of, make decisions for, reign over. / (slang, intransitive, stative) To excel. / (intransitive) To decide judicially.

(obsolete) Revelry.

(obsolete, intransitive) To revel.

(idiomatic, transitive) To consider (something) as a possible option among others.

That rules; predominant; chief; reigning; controlling.

An order or a decision on a point of law from someone in authority.