A person who saves someone or something from danger or difficulty. The firefighter was hailed as a savior after rescuing the family from the burning building.
In Christianity, a title for Jesus Christ, regarded as the redeemer of sin and the one who brings salvation. Many Christians refer to Jesus as their savior, believing he died for their sins.
A thing, plan, or factor that rescues a situation from failure or difficulty. The backup generator was the savior of the event when the main power failed.