Sejanus: Meaning and Definition of

Se•ja•nus

Pronunciation: (si-jā'nus), [key]
— n.
  1. d.a.d. 31, Roman politician, commander of praetorian guard, and conspirator in the reign of Emperor Tiberius.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.