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lifeguard
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As a noun, lifeguard means a bodyguard or unit of bodyguards, a guard of someone's (especially a king's) life or person.
Meanings of lifeguard
5 meaningsnoun
uncommonA bodyguard or unit of bodyguards, a guard of someone's (especially a king's) life or person.
An attendant, usually an expert swimmer, employed to save swimmers in trouble or near drowning at a body of water.
A lifesaver.
rail transportA 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.
An attendant employed at a beach or pool to protect swimmers from accidentsperson
Similar: lifesaver
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).