Meaning of "Caesar"
The original meaning of the name is unknown. The four most common derivations of the cognomen "Caesar" are given by the writer of the Historia Augusta (Aelius 2.3):
* from caesaries, 'hair', because the founder of this branch of the family was born with a full head of hair. (Julius Caesar himself was balding in later life.) This is the etymology favored by Festus.
* from caesius, an eye color variously translated today as 'grey', 'blue-grey', and even 'blue'. (Julius Caesar himself had black eyes, Suet. Jul. 45.)
* from caesum, 'cut out', because the first Caesar was cut from his mother's womb (see Caesarean section). This is the etymology favored by Pliny the Elder (VII.ix.47 — Latin, English). (Julius Caesar himself could not have been so delivered, because this dangerous operation was normally done only upon a dead woman, and his mother was known to have lived for many years after his birth.)
* from caesai, a "Moorish" (maybe Punic) word for "elephant" because the first Caesar had killed such a beast in battle.
Some modern writers have also added yet other derivations, but none has reached anything near mainstream acceptance.
http://en.wikipedia.org/wiki/Etymology_of_...f_Julius_Caesar