<p><strong>Noun</strong></p><ul><li>an authoritative decision, as one by a judge on a debated point of law</li><li>the act of drawing straight lines with a ruler</li><li>ruled lines</li></ul><p><strong>Adjective</strong></p><ul><li>governing or dominating: the ruling party</li><li>controlling; predominating: the ruling factor in recovery from an illness</li><li>widespread; prevalent: ruling prices; ruling values</li></ul>