A float; esp. a floating object moored to the bottom, to mark a channel or to point out the position of something beneath the water, as an anchor, shoal, rock, etc.
- A float moored in water to mark a location, warn of danger, or indicate a navigational channel.
- A life buoy.
- To keep afloat or aloft: a glider buoyed by air currents.
- To maintain at a high level; support: "the persistent ... takeover speculation, which has buoyed up the shares of banks” ( Financial Times).
- To hearten or inspire; uplift: "buoyed up by the team spirit and the pride of the older generation back at home” ( Judith Martin).
- To mark with or as if with a buoy.