[1] : The Collaborative International Dictionary of English v.0.48

caesar \cae"sar\ s=e"z~er, n. l.
   a roman emperor, as being the successor of augustus caesar.
   hence, a kaiser, or emperor of germany, or any emperor or
   powerful ruler. see kaiser, kesar, tsar.
   1913 webster

         marlborough anticipated the day when he would be
         servilely flattered and courted by caesar on one side
         and by louis the great on the other.     --macaulay.
   1913 webster caesarean
see also:
kaiser kesar tsar 

[2] : WordNet (r) 2.0

caesar
     n 1: conqueror of gaul and master of italy 100-44 bc syn: julius
          caesar, gaius julius caesar
     2: united states comedian who pioneered comdey television shows
        born 1922 syn: sid caesar, sidney caesar
see also:
julius caesar gaius julius caesar sid caesar sidney caesar 

[3] : Moby Thesaurus II by Grady Ward, 1.0

46 moby thesaurus words for "caesar":
   dalai lama, holy roman emperor, inca, kaiser, simon legree,
   absolute monarch, absolute ruler, all-powerful ruler, ardri,
   arrogator, autarch, autocrat, bey, cacique, cham, commissar, czar,
   despot, dictator, disciplinarian, driver, duce, hard master, kaid,
   khan, martinet, mikado, negus, oligarch, oppressor, padishah,
   pendragon, pharaoh, rig, sachem, sagamore, shah, sheikh, shogun,
   slave driver, stickler, tenno, tycoon, tyrant, usurper, warlord

[4] : Easton's 1897 Bible Dictionary

caesar
   the title assumed by the roman emperors after julius caesar. in
   the new testament this title is given to various emperors as
   sovereigns of judaea without their accompanying distinctive
   proper names john 19:15; acts 17:7. the jews paid tribute to
   caesar matt. 22:17, and all roman citizens had the right of
   appeal to him acts 25:11. the caesars referred to in the new
   testament are augustus luke 2:1, tiberius 3:1; 20:22,
   claudius acts 11:28, and nero acts 25:8; phil. 4:22.
   

Caesar >> C Words
Caesar, definition of term: Caesar
caesar_pag1.html

Julius Caesar >> J Words
Julius Caesar, definition of term: Julius Caesar
julius+caesar_pag1.html