lifesaver
1. a life preserver in the form of a ring of buoyant material • Syn: life buoy, life belt, life ring • Hypernyms: life preserver, preserver, flotation device • Hyponyms: breeches buoy 2. an attendant employed at a beach or pool to protect swimmers from accidents • Syn: lifeguard • Hypernyms: attendant, attender, tender
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