savior

باللغة العربية: مُخَلِّص، مُنْقِذ

1. A person who saves someone, rescues another from harm. (US)
2. A child who is conceived in order to provide an organ or cell transplant to a sibling who has an otherwise fatal disease (used in combination, with "sibling", "baby", "child", "brother", "sister", etc.) (US)

الجمع saviors