A float moored in water to mark a location, warn of danger, or indicate a navigational channel.
A life-buoy; a life preserver.
To keep afloat or aloft; used with up.
To support or maintain at a high level.
To mark with a buoy.
to buoy an anchor; to buoy or buoy off a channel
To maintain or enhance enthusiasm or confidence; to lift the spirits of.
Buoyed by the huge success, they announced two other projects.