1. a person who saves someone from drowning or other danger
2. a ring-shaped flotation device used to rescue people in water
3. something or someone that provides help in a difficult situation
Usage: informal

Examples

• The lifesaver jumped into the ocean to rescue the drowning swimmer.
• She threw a lifesaver to the man who had fallen overboard.
• The coast guard station keeps several lifesavers ready for emergencies.
• My tutor was a real lifesaver before the math exam.
• That extra loan was a lifesaver when I couldn’t pay rent.
• The emergency fund proved to be a lifesaver during the crisis.
• He’s trained as a professional lifesaver at the beach.