reign (n.) Look up reign at Dictionary.com
early 13c., "kingdom," from O.Fr. reigne, from L. regnum "kingship, dominion, rule, realm," related to regere (see regal). Meaning "period of rule" first recorded mid-14c. The verb, meaning "to hold or exercise sovereign power," is attested from late 13c., from O.Fr. regner, from L. regnare, from regnum.