The Oxford Thesaurus An A-Z Dictionary of Synonyms - buoyn.

1) (navigational or channel) mark or marker, float; nun (-buoy) , can (-buoy) , bell (buoy) , gong (-buoy) , siren, signal, mooring-buoy, spar-buoy, lollipop: Returning to port, always leave the red buoys to starboard. --v. 2) Often, buoy up. lift, raise, elevate, support, hearten, sustain, keep up: We sang songs to buoy up our spirits while the rescuers dug their way towards us.