Scrabble?! BUOY

Definitions of BUOY in various dictionaries:

noun - bright-colored

verb - float on the surface of water

verb - keep afloat

verb - mark with a buoy

A float, often having a bell or light, moored in water as a warning of danger or as a marker for a 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.

verb - to mark with a buoy (a warning float)