Caesar > define

Conqueror of Gaul and master of Italy (100-44 BC.
- synonyms: Julius Caesar, Gaius Julius Caesar
United States comedian who pioneered comedy television shows (born 1922. ).
- synonyms: Sid Caesar, Sidney Caesar

(n.) 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.

by Webster's Revised Unabridged Dictionary

Caesar is a masculine given name

Ancient Roman, English: From a Roman cognomen which possibly meant "hairy" from Latin caesaries
Latin, Greek: Form of Cesar - long-haired
Latin: Form of Cesar. Long haired