Severus definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Severus, (Lucius Septimius) 146-211; Rom. emperor (193-211)
Severus definition by American Heritage Dictionary
, Lucius Septimius A.D. 146-211.
Emperor of Rome (193-211) who created a military monarchy and ruled as a despot.