noun. 
                    Supreme power in governing; imperial power; dominion; sovereignty.
                  
                
                  
                    noun. 
                    The country, region, or union of states or territories under the jurisdiction and dominion of an emperor or other powerful sovereign or government; usually, a territory of greater extent than a kingdom, which may be, and often is, of small extent: as, the Roman or the Russian empire.
                  
                
                  
                    noun. 
                    Supreme control; governing influence; rule; sway: as, the empire of reason or of truth.
                  
                
                  
                    noun. 
                    Synonyms Sway, dominion, rule, reign, government, supremacy.