lifesaver
1. [ noun ] (nautical) a life preserver in the form of a ring of buoyant material
Synonyms: life_saver life_belt life_ring life_buoy
Related terms: life_preserver breeches_buoy
2. [ noun ] (work) an attendant employed at a beach or pool to protect swimmers from accidents
Synonyms: lifeguard
Related terms: attendant
Similar spelling:   life_saver
  lifesaving