Definition from Wiktionary, the free dictionary
- life-guard (dated)
lifeguard (plural lifeguards)
- A guard of the life or person; a guard that attends a prince or other person; a bodyguard.
- (chiefly US) An attendant, usually an expert swimmer, employed to save swimmers in trouble or near drowning at a body of water.
- A lifesaver.
- (rail transport) 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.
attendant employed to save swimmers in trouble or near drowning
rail transport: sturdy metal bracket affixed in front of the leading wheels of a train