lifeguard

hengenpelastaja A guard of the life or person; a guard that attends a prince or other person; a bodyguard.
puhekieltä An attendant, usually an expert swimmer, employed to save swimmers in trouble or near drowning at a body of water.
A lifesaver.
puhekieltä A sturdy metal bracket fixed in front of each of the leading wheels of a train to deflect small objects away from the wheels to prevent derailment.