That rules; predominant; chief; reigning; controlling.
the ruling monarch
a ruling passion
1 more example
Zhou Zhongxiao, 30, an executive at an online dating site in Beijing, said his participation in the China Democratic League had provided an outlet for promoting his pet project: the preservation of traditional wedding rituals. “We provide a useful service by helping the ruling party govern the country,” he said, adding with impatience, “Why does a party always have to be seeking political power?”2013 March 12, Andrew Jacobs, Patrick Zuo, Shi Da, quoting Zhou Zhongxiao, “Non-Communist Parties Lend China an Air of Pluralism, Without the Mess”, in The New York Times, →ISSN, →OCLC, archived from the original on 15 Mar 2013, Asia Pacific:
An order or a decision on a point of law from someone in authority.
These orders are now cancelled as a result of the Minister's ruling.1964 May, “News and Comment: Minister hamstrings BR workshops”, in Modern Railways, page 291: