Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun lifesaver

2 senses of lifesaver

Sense 1
lifeguard, lifesaver -- (an attendant employed at a beach or pool to protect swimmers from accidents)
       => attendant, attender, tender -- (someone who waits on or tends to or attends to the needs of another)

Sense 2
life buoy, lifesaver, life belt, life ring -- (a life preserver in the form of a ring of buoyant material)
       => life preserver, preserver, flotation device -- (rescue equipment consisting of a buoyant belt or jacket to keep a person from drowning)