Etymology: (1250–1300; ME saveour, sauveur < OF sauvëour < LL salvātor=salvā(re) to save1+ L -tor -tor)
Definition of 'savior'
Princeton's WordNet
1. (noun)Jesus, Jesus of Nazareth, the Nazarene, Jesus Christ, Christ, Savior, Saviour, Good Shepherd, Redeemer, Deliverer a teacher and prophetborn in Bethlehem and active in Nazareth; his life and sermons form the basis for Christianity (circa 4 BC - AD 29)
2. (noun)savior, saviour, rescuer, deliverer a person who rescues you from harm or danger
Definition of 'savior'
Webster Dictionary
1. savior one who saves, preserves, or delivers from destruction or danger
2. savior specifically: The (or our, your, etc.) Savior, he who brings salvation to men; Jesus Christ, the Redeemer