1. To possess or exercise sovereign power or authority; to exercise government, as a king or emperor;; to hold supreme power; to rule. We will not have this man to reign over us. (Luke xix. 14) Shall Banquo's issue ever Reign in this kingdom? (Shak)
Origin: OE. Regnen, reinen, OF. Regner, F. Regner, fr. L. Regnare, fr. Regnum. See Reign.