Caesar \C[ae]"sar\, n. [L.]

A Roman emperor, as being the successor of Augustus C[ae]sar. Hence, a kaiser, or emperor of Germany, or any emperor or powerful ruler. See Kaiser, Kesar.

Malborough anticipated the day when he would be servilely flattered and courted by C[ae]sar on one side and by Louis the Great on the other. --Macaulay.

Source: Webster's Revised Unabridged Dictionary (1913)