lifeguard definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
☆ an expert swimmer employed as at a beach or pool to prevent drownings
lifeguard definition by American Heritage Dictionary
An expert swimmer trained and employed to watch over other swimmers, as at a beach or swimming pool. Also called lifesaver.intransitive verb life·guard·ed, life·guard·ing, life·guards
To work or serve as a lifeguard.